WaterSense
WaterSenseฎ Draft Home Certification System
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Table of Contents
1.0 Introduction	1
2.0 Effective Date	2
3.0 References and Definitions	2
4.0 HCO Eligibility and WACM Requirements	4
4.1	HCO Organizational Requirements	5
4.1.1	Independent Oversight	5
4.1.2	Quality Assurance	5
4.1.3	Verifier Training and Authorization	6
4.1.4	Home Verification Protocols	7
4.1.5	Impartiality	7
4.1.5.1	HCO Impartiality	8
4.1.5.2	Verifier Impartiality	8
4.1.5.3	Designee Impartiality	8
4.1.6	Messaging and Reporting	8
4.2	HCO Responsibilities for the Use of Designees	9
4.3	HCO Certification Method Development Process	10
4.4	Technical Evaluation Process for the HCO's Certification Method	12
5.0 Procedures and Requirements for HCOs	13
5.1	Application Procedures for HCOs	13
5.2	HCO Licensure	14
5.3	Issuing the WaterSense Label	14
5.4	Reporting and Recordkeeping	15
5.4.1	Reporting Authorized Verifiers to the EPA	15
5.4.2	Reporting WaterSense Labeled Homes to the EPA	15
5.4.3	Maintaining Records	15
6.0 Procedures and Requirements for Builder Partners	16
6.1	Partnership With the EPA	16
6.2	Application	16
6.3	Home Certification and Labeling	16
7.0 EPA Oversight	17
7.1	General HCO Oversight	17
7.2	Surveillance of Home Conformance and Label Use	17
8.0 Suspension or Withdrawal of the WaterSense Label From Homes	17
9.0 Amendments, Modifications and Revisions	18
9.1	HCO-lnitiated Changes to Organizational or WACM Requirements	18
9.2	EPA-lnitiated Program Changes	19
10.0 For More Information	19
Appendix A: Draft Application for Home Certification Organization (HCO) and Proposed
Certification Method (PCM) Approval
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WaterSenseฎ Draft Home Certification System
1.0 Introduction
In April 2019, WaterSense revamped the structure and requirements of its WaterSense
Specification for Homes to further promote residential water efficiency and help enable market
transformation in home construction. Rather than establishing a prescriptive set of water
efficiency requirements that homes must meet, Version 2.0 of the specification aims to
recognize the technical efficacy of existing home certification programs and rely on established
home certification program infrastructure to facilitate the certification and labeling of homes for
WaterSense.1
Home Certification Organizations (HCOs) are central to this structure. HCOs are responsible for
implementing a program for the verification, certification and labeling of homes for WaterSense.
The U.S. Environmental Protection Agency (EPA) evaluates HCOs to ensure they have the
capability, competence and proper controls to certify and label homes. The EPA also evaluates
the HCO's proposed certification method (PCM), which includes the specific thresholds, criteria
and/or requirements the HCO intends to stipulate that homes pursuing the WaterSense label
shall meet. This evaluation helps to ensure the method was developed in a fair and transparent
manner and that certified homes will meet WaterSense's efficiency requirement. The PCM
becomes a WaterSense Approved Certification Method (WACM) upon the EPA's approval.
Home builders who partner with WaterSense can achieve certification and earn the WaterSense
label for the homes they build through an HCO of their choosing.
This WaterSense Draft Home Certification System outlines the organizational requirements an
HCO must meet to certify homes for WaterSense and authorize the use of the WaterSense
label. It also describes the requirements for and process by which the EPA will evaluate an
HCO's PCM to ensure that labeled homes will meet the water efficiency requirements described
in the WaterSense Specification for Homes, Version 2.0. Lastly, it sets out the requirements,
roles and responsibilities for parties involved in the verification, certification, labeling and
oversight of WaterSense labeled homes, including:
•	Home builders
•	HCOs
•	Verifiers
•	Other parties to which the HCO has designated specific responsibilities for certifying homes
(designees).
This document shall be read in conjunction with the WaterSense Specification for Homes,
Version 2.0 and the WaterSense Technical Evaluation Process for Approving Home
Certification Methods. These documents each address a different aspect of the program
structure, which together are essential for the certification and labeling of homes for
WaterSense. In addition, WaterSense is including by reference that parties must comply with
the WaterSense Program Guidelines, WaterSense Program Mark Guidelines, and any related
technical clarifications issued by WaterSense related to the program requirements or the EPA's
1 See the WaterSense Specification for Homes Supporting Statement for more information on the revisions to the
specification and program structure.
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implementation of the WaterSense homes program. All five program documents, described in
Table 1, provide the minimum requirements and the roles and responsibilities for building,
certifying and labeling homes under the WaterSense program.
Table 1. Documents applicable to the verification, certification and labeling of homes
for WaterSense
Full Title of Document
Purpose
WaterSense Specification for Homes,
Version 2.0
Establishes the criteria for water-efficient homes to be
eligible for the WaterSense label, including compliance
with 1) the Mandatory Checklist, and 2) the water
efficiency requirement, as verified through compliance
with an HCO's WACM. Note that from this point forward,
references to the WaterSense Specification for Homes,
Version 2.0 are inclusive of the Mandatory Checklist
and, by reference, the technical requirements of an
HCO's WACM.
WaterSense Technical Evaluation Process
for Approving Home Certification Methods
Explains the EPA's process and assumptions used to
assess the technical efficacy of the HCO's proposed
certification method in differentiating homes that meet
the water efficiency requirement in the WaterSense
Specification for Homes, Version 2.0.
WaterSense Home Certification System,
Version 2.0
Articulates the parties involved in, and process for,
certifying and labeling homes for WaterSense.
WaterSense Program Guidelines
Provides guidance on eligibility criteria, conditions for
participation, and general information about
WaterSense.
WaterSense Program Mark Guidelines
Establishes guidelines for using WaterSense program
marks in order to ensure promotion of a consistent
WaterSense brand. Partners are required to adhere to
these guidelines.
2.0 Effective Date
The WaterSense Home Certification System, Version 2.0 shall be effective on [Date TBD],
Homes must be certified and labeled in accordance with these requirements starting [Date
TBD].2
3.0 References and Definitions
In addition to the documents listed in Table 1, the following referenced documents are
indispensable for the application of this home certification system. Definitions within all of these
documents are included by reference. For any of the referenced documents below, the most
recent version applies if the version is not indicated.
2 The EPA will determine the effective dates upon issuance of the final WaterSense Specification for Homes, Version
2.0 and WaterSense Home Certification System, Version 2.0.
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•	HCO licensing agreement between the EPA and the HCO.
•	Applications for HCO and PCM approval.
•	Builder partnership agreement between the EPA and a builder of WaterSense labeled
homes.
•	Technical clarifications, developed and maintained by the EPA.
Other definitions applicable to this home certification system include:
Builder Partner: A home builder who has committed to building or renovating homes in
accordance with the WaterSense Specification for Homes, Version 2.0, which includes the
Mandatory Checklist and the water efficiency requirement, to be addressed through an HCO's
WACM. The builder shall signify such commitment by signing a WaterSense builder partnership
agreement with the EPA.
Certification Method Technical Evaluation Process: Process and requirements, described in
detail in the WaterSense Technical Evaluation Process for Approving Home Certification
Methods, Version 1.0, by which the EPA will evaluate the technical efficacy of the HCO's PCM
to ensure that it can differentiate homes that meet the water efficiency requirement in the
WaterSense Specification for Homes, Version 2.0.
Designee: Party(ies) to whom the HCO has delegated specific responsibilities associated with
verifying, certifying, and/or overseeing the verification and/or certification of WaterSense labeled
homes, as allowable under this certification system.
Home Certification Organization (HCO): An independent organization approved and licensed
by the EPA to certify and label homes. An HCO is responsible for administering a WACM that
demonstrates the ability to differentiate homes that meet the water efficiency requirements in
the WaterSense Specification for Homes, Version 2.0. An HCO is also responsible for training
and authorization of verifiers, and overseeing the verification, certification and labeling of homes
in accordance the WaterSense Specification for Homes, Version 2.0.
Licensing Agreement: The legal document between the EPA and an HCO that grants the
HCO access to, and conditions for authorizing the use and distribution of, the WaterSense label.
Outlines the terms, roles and responsibilities for certifying and labeling homes for WaterSense
in accordance with the WaterSense Specification for Homes, Version 2.0. Establishes a
partnership between the EPA and the HCO that delineates program benefits, exclusions and
activities (i.e., partner pledges and EPA commitments) to be conducted by each party.
Mandatory Checklist: Minimum set of requirements detailed in the WaterSense Specification
for Homes, Version 2.0 that a home must meet to earn the WaterSense label.
Builder Partnership Agreement: Formal agreement between the EPA and the builder that
delineates program benefits, exclusions and activities (i.e., partner pledges and EPA
commitments) to be conducted by each party.
Proposed Certification Method (PCM): Methodology an HCO proposes to use to evaluate a
home's compliance with the water efficiency requirement in the WaterSense Specification for
Homes, Version 2.0. The PCM includes the technical requirements or criteria and the
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certification threshold homes must achieve to demonstrate adherence to the water efficiency
requirement in the WaterSense Specification for Homes, Version 2.0.
WaterSense Approved Certification Method (WACM): A certification method that the EPA
has evaluated in accordance with the certification method technical evaluation process and has
determined can effectively differentiate homes that meet the water efficiency requirement in the
WaterSense Specification for Homes, Version 2.0. In addition to the EPA's Mandatory Checklist,
the WACM serves as the basis for certifying and labeling homes for the WaterSense program.
WaterSense Home Verifier (Verifier): Individual who is trained and authorized by an HCO or
its designee to verify (or rate) homes in accordance with the WaterSense Specification for
Homes, Version 2.0, which includes the Mandatory Checklist, and by reference the
requirements of the HCO's WACM.3
WaterSense Label: A registered certification mark that contains the words "WaterSense" and
"Meets EPA Criteria" in a circular pattern around the WaterSense graphic "water drop" image.
To signify a home's compliance with the WaterSense Specification for Homes, Version 2.0, an
HCO or its designee will provide the WaterSense label to the builder partner. The WaterSense
label will be provided in the form of a certificate or sticker, which shall contain a copy of the
WaterSense label and other relevant information to identify the certified home. References to
the certificate are considered synonymous with the WaterSense label and, as such, the terms
may be used interchangeably throughout this document.
4.0 HCO Eligibility and WACM Requirements
In accordance with the requirements and procedures set forth in this section, the EPA shall
evaluate and approve the HCO and its PCM. This evaluation shall include three components:
•	HCO Organizational Requirements (Section 4.1): The EPA shall evaluate the HCO's
organizational structure and processes and procedures in place to conduct the verification,
certification and labeling of homes for WaterSense. An HCO may use a designee (Section
4.2) to meet many of the organizational requirements.
•	Certification Method Development Process (Section 4.3): The EPA shall evaluate the
process by which the technical requirements of an HCO's PCM were developed to ensure
openness and transparency.
•	Certification Method Technical Evaluation Process (Section 4.4): The EPA shall evaluate the
technical efficacy of the HCO's PCM in demonstrating homes' compliance with the water
efficiency requirement in the WaterSense Specification for Homes, Version 2.0.
Interested HCOs shall apply to the EPA in accordance with the process described in Section
5.0.
3 A verifier may be an employee of a designee, an employee associated with an independent organization that
contracts for verification services, an individual that contracts for verification services or, under certain circumstances,
a direct employee of the HCO.
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4.1 HCO Organizational Requirements
WaterSense has identified six components of certification, described in the subsections below,
that ensure an HCO has a structure in place to effectively certify homes and issue and maintain
the integrity of the WaterSense label. These include:
•	Independent oversight
•	Quality assurance
•	Verifier training and authorization
•	Home verification protocols
•	Impartiality
•	Messaging and reporting
The HCO shall demonstrate to the EPA, through documentation supplied in its application (see
Section 5.1), that it meets the requirements outlined in this section.
The HCO may delegate certain organizational requirements outlined below to a designee(s). A
designee can be a provider that hires or contracts with inspectors, or other organization capable
of adhering to the certification requirements, as relevant to the specific responsibility being
designated. The use of designees is more fully described in Section 4.2.
4.1.1	Independent Oversight
The HCO shall maintain independent oversight procedures to ensure that the certification and
labeling of homes for WaterSense is governed in a fair and impartial manner. This includes:
•	Maintaining an independent oversight committee(s). The HCO shall maintain an
independent oversight committee(s) or governing board of directors that supervises the
HCO's operation of its program related to WaterSense, while exercising independent,
professional judgment. The committee(s) shall be composed of at least three individuals
with varying backgrounds representative of different program stakeholders. Employees of
the HCO shall hold no more than one-third of the positions on the oversight committee(s).
4.1.2	Quality Assurance
The HCO shall implement quality assurance procedures that ensure that verifiers consistently
inspect and document compliance in accordance with the WaterSense Specification for Homes,
Version 2.0, which includes the Mandatory Checklist and, by reference, the technical
requirements of the HCO's WACM. At a minimum, the quality assurance shall include:
•	Auditing WaterSense labeled homes. The HCO shall audit a subset of homes that have
received the WaterSense label to ensure homes are meeting the technical requirements of
the HCO's WACM and the Mandatory Checklist. The audit shall include a representative
sample of WaterSense labeled homes such that it demonstrates the capacity to identified
erroneous certifications.
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•	Ensuring qualified verifiers. The HCO shall only use verifiers in good standing with all
training and impartiality requirements, as described in Section 4.1.3 and 4.1.5, respectively,
to provide verification services.
•	Disciplining verifiers. The HCO shall maintain and enforce disciplinary procedures for
verifiers that do not meet the quality requirements of the HCO.
•	Resolving complaints. The HCO shall maintain and execute procedures to respond to and
resolve complaints involving home verification and/or certification. This includes
investigating failures impacting the water efficiency of certified homes.
•	Maintaining quality assurance documentation. The HCO shall maintain thorough
documentation of quality assurance activities including audit results, verifier
training/authorization records, verifier discipline records and complaint resolutions.
4.1.3 Verifier Training and Authorization
The HCO shall train and authorize verifiers to verify homes in accordance with the WaterSense
Specification for Homes, Version 2.0, which includes the Mandatory Checklist and, by
reference, the technical requirements of the HCO's WACM. At a minimum, this shall include:
•	Training verifiers on home verification and documentation procedures. The HCO shall
train verifiers to properly document home verifications and complete all reporting and quality
assurance submissions required by the HCO and WaterSense. WaterSense shall supply
each HCO with required training materials for the WaterSense Specification for Homes,
Version 2.0 (hereafter referred to as WaterSense program-specific training requirements).
The HCO shall supplement this training with additional information needed for the verifiers to
understand and administer the HCO's WACM.
•	Providing verifier training reciprocity. The HCO shall waive any WaterSense program-
specific training requirements for potential new verifiers, provided that the verifier has
completed the WaterSense program-specific training requirements within the past two years
(for example, as part of training under another HCO). The WaterSense program-specific
training requirements are the only training requirements subject to this transferability. There
is no obligation or expectation that the WACM-specific training will be transferable.
Additionally, HCOs that utilize designees for quality assurance shall have procedures in
place to facilitate transferability of verifiers from one designee to another.
•	Formally authorizing verifiers. The HCO shall formally authorize verifiers to verify homes
in accordance with the WaterSense Specification for Homes, Version 2.0 and the HCO's
WACM. The requirements for verifier authorization shall at a minimum include:
documentation of successful completion of training; and evaluation, disclosure, and
resolution of conflicts of interest (COI), as outlined in Section 4.1.5. The HCO shall maintain
a list of authorized verifiers and periodically report authorized verifiers to the EPA, as
described in Section 4.1.6.
•	Integrating updates. In the event of modifications or clarifications to the WaterSense
Specification for Homes, Version 2.0 or the HCO's WACM requirements, the HCO shall
retrain verifiers on the new program requirements before the verifier inspects additional
homes. The HCO shall maintain up-to-date training records.
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4.1.4	Home Verification Protocols
The HCO shall implement home verification protocols, which at a minimum shall include:
•	Requiring verifiers to adhere to the WaterSense Specification for Homes, Version 2.0.
The HCO shall ensure verifiers conduct verifications in accordance with the WaterSense
Specification for Homes, Version 2.0, which includes the Mandatory Checklist and, by
reference, the technical requirements of the HCO's WACM.
•	Verifying builder partnership agreement with the EPA. The HCO shall verify that any
builder seeking home certification in accordance with the WaterSense Specification for
Homes, Version 2.0 has a signed WaterSense builder partnership agreement prior to
issuing the WaterSense label and associated certification documentation.
•	Maintaining verification documentation. The HCO shall obtain home verification
documentation (e.g., checklists, scorecards) from verifiers. At a minimum, the
documentation shall include:
o Builder partner contact information;
o Address or lot number of the verified home (and address or lot number of any homes
covered by a relevant sampling protocol);
o Documentation of verification results sufficient to recreate the verification, including a
completed Mandatory Checklist required by the WaterSense Specification for Homes,
Version 2.0;
o Name and contact information for the verifier; and
o Home verification date(s).
•	Sampling protocol. The HCO may offer builder partners the opportunity to participate in a
sampling protocol if a builder partner intends to certify multiple homes within the same
subdivision, planned community or multifamily building. Sampling protocols could allow a
builder to seek the WaterSense label for a group of homes based on pre-analysis of building
plans and subsequent verification of a sample set of the homes. If the HCO chooses to offer
a sampling protocol for home certification, the protocol shall outline eligibility requirements
for a builder partner to participate in the sampling protocol and ensure that verification
occurs on a representative sample of homes constructed by the builder partner. The
protocol shall also establish processes for revoking eligibility for sampling based on failure to
meet certification and quality assurance requirements.4
4.1.5	Impartiality
The HCO shall have a systematic method for ensuring financial, legal, and ethical impartiality as
it pertains to verifying a home's compliance with the WaterSense Specification for Homes,
Version 2.0 and the HCO's WACM, and as it pertains to issuing the WaterSense label. The
HCO's impartiality management strategy shall account for both organizational and individual
4 In Version 1.2 of the WaterSense New Home Certification System, the EPA defined the sampling protocol to include
the successful inspection of the first seven homes within a subdivision, planned community or multifamily building,
after which the verifier could randomly select and verify one home from every additional batch of seven homes. To
provide additional flexibility under this version of the certification system, the HCO may choose to implement
sampling at a lower rate, provided it demonstrates to the EPA that it has other quality assurance activities in place to
ensure continued compliance with the requirements of the WaterSense Specification for Homes, Version 2.0.
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COI. Organizational COI pertains to the organization(s) responsible for various aspects of home
verification and certification, whereas individual COI pertains to a specific person involved in the
verification or certification decision. Examples of COI include, but are not limited to, an
organization or individual:
•	Providing consulting or design services for a home.
•	Acting as the seller of the home or the seller's agent.
•	Acting as the lender for some portion of the financed payments on the home.
•	Selling, supplying or installing products to facilitate the home meeting the specification
criteria.
•	Participating in both verification and sales or marketing activities of the HCO.
4.1.5.1	HCO Impartiality
The HCO is responsible for implementing its COI strategy for the organization and any
individuals under its direct employ.
4.1.5.2	Verifier Impartiality
An HCO that uses verifiers outside of its direct employ shall implement a verifier COI strategy
that includes the following:
•	Verifier COI disclosure. The HCO shall require current or prospective verifiers to disclose
any potential or existing COI.
•	Written verifier COI policy. The HCO shall have written procedures for evaluating and
resolving potential COI disclosed by the external verifiers. The HCO must also outline
procedures to be enacted in the event that COI cannot be satisfactorily resolved.
If the HCO assigns a designee(s) to implement the verifier COI policy, it shall have procedures
in place to ensure the designee's compliance with the verifier COI strategy.
4.1.5.3	Designee Impartiality
An HCO that uses a designee(s) as allowed by this certification system shall implement a
designee COI strategy that includes the following:
•	Designee COI disclosure. The HCO shall require current or prospective designees to
disclose any potential or existing COI.
•	Written designee COI policy. The HCO shall have written procedures for evaluating and
resolving COI presented by a designee. The HCO must also outline procedures to be
enacted in the event that COI issues cannot be satisfactorily resolved.
4.1.6 Messaging and Reporting
The HCO shall ensure information flow from WaterSense to the HCO (messaging) and
information flow from the HCO to WaterSense (reporting). The HCO shall also ensure that
relevant information is conveyed in a timely manner between WaterSense and the HCO's
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designee(s), builders and verifiers. At a minimum, the HCO's messaging and reporting
procedures shall include:
•	Centralized messaging structure. The HCO shall have a structure that enables it to
disseminate information from WaterSense to relevant stakeholders. Stakeholders can
include designees, verifiers and/or builders. Messaging shall be complete, clear and timely.
•	Inquiry response system. The HCO shall have procedures for stakeholders to submit
questions about home certifications and the WaterSense label. The HCO shall have a
means of providing accurate and timely responses to these inquiries.
•	Quarterly reporting to WaterSense. The HCO shall report home certification information to
WaterSense at least quarterly. At minimum, the HCO shall provide the following information
regarding the homes certified and WaterSense labels issued in accordance with the
WaterSense Specification for Homes, Version 2.0\
o Builder partner name
o Number of certified homes
o General location of certified home(s), including development (if applicable), city, state
and zip code
•	Non-routine requests for reporting program information to WaterSense. The HCO shall
provide additional program information to WaterSense in a timely manner, as requested. On
occasion, WaterSense may request information about topics including, but not limited to:
o Mandatory Checklists for specific homes
o Promotional materials created by the HCO and/or its designee(s)
o Common non-conformities or issues encountered during the past quarter
•	Maintaining information about authorized verifiers and reporting to WaterSense. The
HCO shall maintain basic information about authorized verifiers. In addition, the HCO shall
report information about their authorized verifiers to WaterSense at least quarterly.
WaterSense shall provide the HCO with a standardized format for reporting, which shall
include, at a minimum, the following information for each authorized verifier:
o	Name
o	Employer (or company name if self-employed)
o	Phone number
o	Email address (if available)
o	Website URL (if available)
o	State(s) and markets where verification services are offered
o	Confirmation if the information about the verifier can be made publicly available
4.2 HCO Responsibilities for the Use of Designees
The HCO is permitted to delegate certain responsibilities to one or more designees, with the
exception of the responsibilities described below. In the instance of delegation, the HCO shall
provide WaterSense with information about the use of designee(s) and shall submit sufficient
information on policies that it requires designee(s) to follow. If the HCO plans to use a
designee(s), the HCO shall also submit its procedures for overseeing the designee(s) and the
fulfillment of their responsibilities. Procedures shall also include the process by which an HCO
will remove a designee if it fails to meet the HCO's requirements.
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The EPA has identified specific requirements the HCO may not delegate. Specifically, the HCO
itself must:
•	Maintain the final authority over the certification decision and issuance of the WaterSense
label as outlined in Section 5.3;
•	Establish and implement impartiality requirements as outlined in Section 4.1.5; and
•	Report information on authorized verifiers and certified homes to WaterSense as outlined in
Section 4.1.6.
HCOs using a designee(s) shall implement procedures that include, at a minimum, the
following, as applicable to the responsibilities of the designee(s):
•	Overseeing designee(s) performing quality assurance activities. If an HCO assigns a
designee(s) to fulfill some or all of its quality assurance services, the HCO shall monitor and
oversee the designee(s) to ensure that it follows the quality assurance procedures and
requirements established by the HCO.
•	Overseeing designee(s) performing verifier training. If an HCO assigns a designee(s) to
train and authorize verifiers, the HCO shall develop or approve the designee training
program and monitor and oversee the designee(s) to ensure that it is fulfilling the training
requirements. The HCO shall retain and maintain a list of trained and authorized verifiers
from the designee(s).
•	Collecting information from designee(s) and verifiers. The HCO shall collect data from
its designee(s) needed to satisfy WaterSense reporting requirements.
4.3 HCO Certification Method Development Process
In developing the technical requirements included in the PCM, the HCO shall follow one of the
three approaches outlined below to demonstrate that the requirements were developed
following an open and transparent process.
•	Utilize an American National Standards Institute (ANSI) approved standard. The
technical requirements in the PCM requirements are included in an ANSI approved standard
that was developed and approved through an ANSI consensus-based standard
development process. The PCM may include additional technical requirements in its PCM
that it has determined are necessary to achieve additional water efficiency and/or meet the
water efficiency requirements of the WaterSense Specification for Homes. In this instance
the PCM shall disclose the additional requirements to the EPA in its application. The EPA
will evaluate the requirements on a case by case basis.
•	Follow requirements for the jurisdiction with authority (for public agencies). For HCOs
that operate under the auspices of a public agency, the HCO shall demonstrate that the
technical requirements included in the PCM were developed in compliance with the
administrative and transparency requirements for standards and policy development of the
jurisdiction having authority over the program.
•	Demonstrate development in accordance with the certification method alternative
development requirements. If neither of the first two requirements can be met, the HCO
shall provide documentation demonstrating that the technical requirements included in the
PCM were developed in accordance with the criteria and requirements described in Table 2.
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These criteria are based on the ANSI Essential Requirements,5 but have been modified to
apply to certification method development for WaterSense.
Table 2. Certification Method Alternative Development Requirements
Criteria
Requirement
Openness
ฆ	Participation in certification method development shall be open to all persons
who are directly and materially affected by the certification method. There
shall be no undue financial barriers to participation. Voting membership shall
not be conditional upon membership in any organization, or unreasonably
restricted on the basis of technical qualifications or other such requirements.
ฆ	Timely and adequate notice of any action to create, revise, reaffirm, or
withdraw the certification method, and the establishment of a new
certification method development body shall be provided to all known directly
and materially affected interests. Notice shall include a clear and meaningful
description of the purpose of the proposed activity and shall identify a readily
available source for further information.
• Members shall declare all conflicts of interest at the start of the process. The
member's name (or if membership is by organization, the name of the
organization with a point of contact), affiliation, and interest category of each
member shall be made available to interested parties upon request.
Lack of dominance
ฆ The certification method development process shall not be dominated by
any single interest category, individual or organization. Dominance means a
position or exercise of dominant authority, leadership, or influence by reason
of superior leverage, strength, or representation to the exclusion of fair and
equitable consideration of other viewpoints.
Balance
ฆ	The certification method development process shall have a balance of
interests. Participants from diverse interest categories shall be sought with
the objective of achieving balance. If the membership lacks balance,
outreach to achieve balance shall be undertaken. Balance means that no
single interest category constitutes a majority of the membership.
ฆ	In defining interest categories appropriate, consideration shall be given to at
least the following:
•	Builders
•	Home certification community
•	Manufacturers
•	Utilities
•	Municipalities
•	General interest
Notification of
certification method
development
ฆ	Notification of certification method development activity shall be announced
in suitable media as appropriate to demonstrate an opportunity for
participation by all directly and materially affected persons.
ฆ	Public review is made available for a minimum of 30 days prior to the final
publication of the certification method.
Consideration of
views and
objections
ฆ	Prompt consideration shall be given to the written views and objections of all
participants.
ฆ	A publicly available written response shall be provided to comments on
formal ballots or public reviews drafts.
5 ANSI Essential Requirements: Due process requirements for American National Standards. 2018.
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Table 2. Certification Method Alternative Development Requirements
Criteria
Requirement
Consensus vote
ฆ Evidence of consensus in accordance with these requirements and the
procedures of the certification method developer shall be documented.
Appeals
ฆ	Written procedures shall contain an identifiable, realistic and readily
available appeals mechanism for the impartial handling of procedural
appeals regarding any action or inaction. Procedural appeals include
whether a technical issue was afforded due process.
ฆ	Persons who have directly and materially affected interests and who have
been or will be adversely affected by any procedural action or inaction with
regard to the certification method development (or the revision, reaffirmation
or withdrawal of the certification method), have the right to appeal.
4.4 Technical Evaluation Process for the HCO's Certification Method
The EPA shall evaluate the technical efficacy of the PCM in accordance with its WaterSense
Technical Evaluation Process for Approving Home Certification Methods, Version 1.0 to ensure
that the PCM can differentiate homes that meet the efficiency requirement in the WaterSense
Specification for Homes, Version 2.0. Upon approval, the PCM becomes the HCO's WACM that
can be used in conjunction with the Mandatory Checklist to verify a home's compliance with the
WaterSense Specification for Homes, Version 2.0.
The WaterSense Technical Evaluation Process for Approving Home Certification Methods,
Version 1.0 describes the EPA's process and assumptions for assessing the water efficiency a
PCM achieves. It identifies the specific features (e.g., plumbing fittings, fixtures, hot water
distribution, irrigation equipment) used to assess the water efficiency of a home and its
landscape design(s), and describes how the EPA applies those features to a set of reference
homes to estimate baseline water use for a conventional home and water efficiency that can be
achieved through the application of the requirements in the PCM. All features included in the
technical evaluation have documented water savings associated with their implementation. The
WaterSense Technical Evaluation Process for Approving Home Certification Methods, Version
1.0 also describes how the EPA tailors its assumptions to account for the geographic scope
where the PCM will be implemented (e.g., specific to a locality or region, or nationally). The EPA
will use the certification method technical evaluation process to determine whether the
requirements and specific thresholds or criteria specified in an HCO's PCM can effectively
identify homes that meet the EPA's water efficiency requirement compared to typical new
construction.
The HCO shall submit its PCM, including the technical requirements and all associated
thresholds or other criteria that the HCO will use to determine compliance with WaterSense's
efficiency requirement, to the EPA for evaluation as part of the application process described in
Section 5.1.
The EPA's intent is to recognize a WACM for a period of five (5) years as long as it is not
revised by the HCO such that the revisions could impact its ability to differentiate homes that
meet the EPA's water efficiency requirement. However, as described in Section 9.2, the EPA
reserves the right to modify the certification method technical evaluation process from time to
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time as technological and/or market changes affect the usefulness of the requirements to
HCOs, builders, consumers, industry, or the environment or to clarify requirements. At the end
of the five (5) years, if the EPA has updated or revised the WaterSense Technical Evaluation
Process for Approving Home Certification Methods, Version 1.0, the EPA reserve the right to re-
evaluate an HCO's WACM to ensure that it can continue to differentiate homes that meet the
efficiency requirement in the WaterSense Specification for Homes, Version 2.0.
If the requirements of the HCO's WACM are revised prior to the end of the five (5)-year period,
the HCO shall notify the EPA of these revisions pursuant to Section 9.1. The EPA will assess
the HCO's updated certification method using the latest version of the WaterSense Technical
Evaluation Process for Approving Home Certification Methods.
5.0	Procedures and Requirements for HCOs
The EPA shall evaluate an HCO's organizational structure and PCM prior to licensing the HCO
to certify and label homes in accordance with the WaterSense Specification for Homes, Version
2.0, which includes the Mandatory Checklist and, by reference, the requirements stipulated in
the WACM. This section outlines the HCO's application and licensing procedures and
summarizes the HCO's roles and responsibilities under this certification system.
5.1	Application Procedures for HCOs
An HCO interested in certifying and labeling homes for WaterSense shall submit an application
to the EPA, including all necessary documentation to demonstrate compliance with the
requirements in Section 4.0. The EPA shall supply, and the HCO shall complete, the application
form. A copy of the application form is provided in Appendix A to this certification system.
In addition, the HCO shall provide with its application:
•	Documentation of Organizational Requirements: The HCO shall document compliance
with the organizational requirements listed in Sections 4.1 and 4.2. This shall include
information on the use and oversight of any designee(s).
•	Documentation of Certification Method Development: The HCO shall document
compliance with the requirements of the process used to develop the technical requirements
included in its PCM, as described in Section 4.3.
•	Copy of the Proposed Certification Method: The HCO shall supply the EPA with a copy
of its PCM and all necessary supporting documentation to support the EPA's evaluation of
the method's technical efficacy in accordance with the WaterSense Technical Evaluation
Process for Approving Home Certification Methods, Version 1.0. This shall include the
thresholds and criteria the HCO plans to implement to meet the water efficiency requirement
in the WaterSense Specification for Homes, Version 2.0.
•	Point of Contact: The HCO shall designate a point of contact in its application and shall
provide that individual's contact information. This point of contact shall be responsible for
communicating and disseminating information to and from the EPA as appropriate and will
be listed on the WaterSense website as the point of contact regarding the HCO's program.
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Application forms are available on the WaterSense website. Completed applications and all
supporting documentation shall be emailed to the WaterSense Helpline at
watersense@epa.gov.
5.2	HCO Licensure
Upon receipt and evaluation of the application and supporting documentation, if the HCO meets
all criteria satisfactorily, the EPA shall notify the HCO that it is eligible to sign a licensing
agreement. The HCO shall return signed copies of a licensing agreement supplied by the EPA.
This is a legal document between the EPA and the HCO that grants the HCO access to, and
conditions for authorizing the use and distribution of, the WaterSense label for homes. It also
outlines the terms and roles and responsibilities for certifying and labeling homes for
WaterSense in accordance with the WaterSense Specification for Homes, Version 2.0. The
licensing agreement will also signify partnership between the EPA and the HCO and will
delineate program benefits, exclusions and activities (i.e., partner pledges and EPA
commitments) to be conducted by each party.
The EPA shall return signed and fully executed copies of the licensing agreement to the HCO
along with an electronic version of the WaterSense label certificate and any WaterSense-
specific training or other program materials. The signed agreement signifies that the HCO may
train verifiers and certify homes and issue the WaterSense label.
The EPA shall maintain a listing of licensed HCOs and their respective WACMs on the
WaterSense website.
The EPA reserves the right to terminate the licensing agreement for any HCO that does not
actively fulfill the requirements outlined in this certification system.
5.3	Issuing the WaterSense Label
Prior to issuing the WaterSense label, the HCO shall ensure, either directly or through its
procedures established with its designee(s), that a builder partnership agreement is in place
(and signed by both parties) (described in Section 6.1). To verify the partnership, the HCO or its
designee(s) should check the WaterSense website for a current list of builder partners. If the
builder is not listed on the WaterSense website, the HCO or its designee(s) can verify the
partnership agreement by contacting the WaterSense Helpline at (866) WTRSENS (987-7367)
or watersense@epa.gov.
The HCO shall maintain the final authority over the certification decision and issuance of the
WaterSense label. It shall confirm that a builder partner's home(s) conforms with and has been
verified in accordance with its WACM and the WaterSense Specification for Homes. Version
2.0, which includes the Mandatory Checklist. The HCO shall document its certification decision,
and the HCO or its designee shall complete and provide to the builder partner the WaterSense
label certificate for each certified home, which includes:
•	A certification statement that the home has been certified to meet the WaterSense
Specification for Homes
•	The name of the builder partner
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•	The name/company of the authorized verifier
•	The name of the HCO
•	The address or lot number of the certified home
•	The date of certification
At the time the WaterSense label is issued, the HCO shall also supply the builder partner with
guidelines on proper use of the WaterSense program marks.
5.4 Reporting and Recordkeeping
HCOs shall maintain records associated with program operations and routinely submit
documentation about verifiers and homes that have received the WaterSense label to the EPA.
5.4.1	Reporting Authorized Verifiers to the EPA
The HCO shall maintain a list of authorized verifiers who have met all training, impartiality and
other requirements as outlined in the HCO's approved organizational requirements. At least
quarterly, the HCO shall submit a complete list of authorized verifiers to the EPA. See Section
4.1.6 for details on information that should be included in the HCO's report.
At its discretion, the EPA may post the list of authorized verifiers (and/or associated employer)
to the WaterSense website so that builder partners can find specific verifiers in their area who
can provide verification services for WaterSense and the HCO's WACM. The EPA may also use
the contact information provided to contact authorized verifiers or to provide informative updates
about the WaterSense program. HCOs can notify the EPA of verifiers who choose to opt out of
communication.
5.4.2	Reporting WaterSense Labeled Homes to the EPA
The HCO shall report at least quarterly to the EPA regarding the homes that they have certified
within the previous quarter. See Section 4.1.6 for details on information that should be included
in the HCO's report.
5.4.3	Maintaining Records
The HCO shall maintain records related to its implementation of the WACM and certification and
labeling of homes for WaterSense and shall be able to provide the EPA with access to or copies
of the records upon request. In the instance where a specific certification responsibility is
delegated, as allowed under this certification system, the HCO shall ensure that the designee(s)
maintains the relevant records and that it has access to the records upon request. The HCO
and/or designee(s) shall maintain all relevant records for a minimum of three (3) years. At a
minimum, these records shall include:
•	Documentation of quality assurance activities
•	Verifier training and authorizations
•	Verification records
•	COI disclosures and resolutions
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•	Documentation to support certification decisions
6.0	Procedures and Requirements for Builder Partners
This section outlines the requirements and procedures for builders. Builders that partner with
the EPA can earn WaterSense certification through an HCO program of their choosing. To earn
the WaterSense label, candidate homes will be verified and certified in accordance with the
WaterSense Specification for Homes, Version 2.0, which includes the Mandatory Checklist, and,
by reference, requirements in the selected HCO's WACM.
6.1	Partnership With the EPA
Builders shall sign a builder partnership agreement with the EPA as described in the
WaterSense Program Guidelines if they wish to obtain the WaterSense label for their homes.
Receipt of the WaterSense label is contingent upon partnership and home certification. The
HCO or its designee shall verify that the builder has a partnership agreement in place with the
EPA as part of the certification process and prior to issuing the WaterSense label certificate.
The EPA shall maintain a list of builder partners who have built or plan to build WaterSense
labeled homes.
As part of the builder partnership agreement with the EPA, the builder shall provide the EPA
with:
•	Contact information
•	Company website, if applicable
•	A list of states and/or localities in which they build
The EPA shall post this information on its builder partner list on the WaterSense website. The
registry may also include the general location(s) (city, state) and number of WaterSense labeled
homes for each builder partner, as reported by the respective HCO.
6.2	Application
The builder partner shall apply for certification for each individual home. To initiate the
verification and certification process, the builder partner shall identify the WACM under which it
would like to obtain certification and contact the respective HCO or one of its authorized verifiers
directly. The EPA shall maintain a list of HCOs, information regarding the HCO's WACM, and a
list of associated authorized verifiers on the WaterSense website, including the localities where
the authorized verifiers offer verification services for the HCO's program.
6.3	Home Certification and Labeling
The builder partner shall work with the HCO or its designee(s) and authorized verifiers to
determine the home's compliance with the WaterSense Specification for Homes, Version 2.0,
which includes the Mandatory Checklist and, by reference, the requirements stipulated in the
WACM. This includes compliance with all quality assurance and oversight requirements
specified by the HCO. Upon verification, the HCO shall provide documentation of certification,
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and the HCO or its designee will present the builder partner with a copy of the WaterSense label
certificate.
The WaterSense label indicates that the home has been certified to conform to the WaterSense
Specification for Homes. A WaterSense label shall not create any express or implied warranty.
At the time the WaterSense label is issued, the HCO or designee shall also supply the builder
partner with guidance on proper use of the label. The builder partner is then allowed to advertise
that the home conforms to the specification. Any promotion of the WaterSense label shall be
directly related to the certified home or to a community of homes that earn the WaterSense label
individually. The EPA will also provide builder partners with promotional resources that will help
them to advertise and market their intent to build homes to meet the WaterSense specification.
7.0	EPA Oversight
The EPA is responsible for overseeing the HCO's implementation of the certification and
labeling of homes for WaterSense.
7.1	General HCO Oversight
The EPA reserves the right to audit the operations and records of an HCO and/or its
designee(s) to ensure that the HCO is meeting the responsibilities under this certification
system. The EPA shall request and the HCO shall provide the EPA with documentation to
facilitate the operations and records audit.
If the EPA discovers that the HCO is failing to meet its responsibilities under this certification
system, it will notify the HCO and will coordinate corrective action or, if necessary, suspend or
revoke the HCO's participation in the program. In the event that an HCO fails to satisfy its
responsibilities, the EPA can terminate the HCO's licensing agreement. These measures can be
temporary or permanent at the EPA's discretion, dependent on the severity of the issue.
7.2	Surveillance of Home Conformance and Label Use
The EPA also reserves the right to conduct periodic in-home inspections of labeled homes prior
to their sale or initial occupancy and to periodically review websites and other certification
references and WaterSense label usages. In the case of an in-home inspection, the EPA will
coordinate the visit with the builder partner and the home's verifier and/or HCO, so as not to
delay the certification process. If nonconformities with the specification are identified, the EPA
will notify the HCO and/or the builder partner and will engage in corrective or other necessary
action in accordance with Section 8.0 of this document.
8.0 Suspension or Withdrawal of the WaterSense Label From Homes
The HCO is responsible for notifying the EPA of specific instances of nonconformity.
Nonconformity may include, but is not limited to:
• Receipt of formal complaints from home buyers or other interested parties indicating that a
certified home's water-efficient features were generally misrepresented (e.g., multiple
features do not comply with the specification).
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• Instances where the HCO or its designee discovers that a builder is fraudulently or falsely
claiming that its homes have been certified and labeled in accordance with the WaterSense
Specification for Homes, Version 2.0, including the Mandatory Checklist, the HCO's WACM
and this certification system.
The EPA is responsible for engaging the builder in corrective action and for determining when
the use of the WaterSense label should be suspended or withdrawn due to nonconformance or
improper use of or reference to the WaterSense label. The EPA might also discover
nonconformance or improper use or reference to the WaterSense label from its stakeholders or
during periodic reviews of certification and label usage. If the EPA discovers nonconformance or
certification and labeling issues, it will notify the HCO that issued the WaterSense label and will
coordinate corrective action or, if necessary, label suspension or withdrawal. WaterSense label
suspension can occur for a limited period of time as specified by the EPA. During the period of
suspension, the builder partner is prohibited from using the WaterSense label in conjunction
with the home in question and with any home built after the issuance of a suspension, until such
time as the EPA indicates the suspension can be removed. The HCO shall assist the EPA as
necessary by revoking the WaterSense label from the home in question, determining when the
terms for suspension removal have been fulfilled, ensuring that no new WaterSense labels are
issued during the period of suspension, and upon the EPA's approval, reissuing the
WaterSense label to the builder partner for the home in question.
In more severe or repeated instances of nonconformity, improper use or reference to the
WaterSense label, or failure to meet the requirements for reinstatement of a suspended
WaterSense label, the EPA will rescind the WaterSense label from all of the builder partner's
certified homes that have not yet been sold. The EPA will notify the builder partner that the
certification and WaterSense label are being withdrawn. If the WaterSense label is withdrawn
for any reason, the EPA will require that the builder partner cease to advertise the certification of
its homes to the WaterSense specification, and the label shall be eliminated immediately from
homes not already sold. The EPA will inform the HCO that the builder partner is no longer
allowed to use or receive the WaterSense label and will decide whether termination of the
builder partnership agreement or other corrective action is warranted. The HCO will assist the
EPA as necessary by rescinding the WaterSense label from all certified homes that have not yet
been sold and will not issue any new WaterSense labels to the builder partner.
9.0	Amendments, Modifications and Revisions
In the course of program operations, the HCO and/or the EPA may decide to change certain
elements of program structure and function. The following sections describe procedures to be
followed in the event of amendments, modifications and/or revisions initiated either by the HCO
or the EPA.
9.1	HCO-lnitiated Changes to Organizational or WACM Requirements
The HCO shall notify the EPA in writing about any proposed organizational or WACM changes
that materially affect its compliance with the requirements outlined in this certification system.
Notification shall be made at least 60 days prior to the implementation of such changes and with
sufficient time to allow for the EPA to evaluate the changes and determine if the HCO and its
WACM will continue to meet the requirements of the certification system and the WaterSense
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Specification for Homes, Version 2.0. The HCO shall notify the EPA of these changes via email
by contacting the WaterSense Helpline at watersense@epa.gov.
The EPA shall evaluate revisions to the HCO's WACM using the latest version of the
WaterSense Technical Evaluation Process for Approving Home Certification Methods.
The EPA shall notify the HCO if modifications are needed to the proposed requirements or the
licensing agreement between the EPA and the HCO as a result of the changes.
9.2 EPA-lnitiated Program Changes
The EPA reserves the right to amend these rules of procedure, which may include issuing
technical clarifications or amending or revising this certification system, the WaterSense
Specification for Homes, Version 2.0 or the WaterSense Technical Evaluation Process for
Approving Home Certification Methods, Version 1.0. The EPA may revise these documents
independently, depending on the nature of the changes.
Revisions to the specification, certification method technical evaluation process or this
certification system can occur due to technological and/or market changes that affect the
usefulness of the requirements to HCOs, builders, consumers, industry, or the environment or to
clarify requirements. The EPA will only make major revisions following an open public process.
This will include discussion with industry and other interested stakeholders regarding the
changes and any transition period. Minor revisions will generally be more editorial in nature and
serve to clarify requirements. The EPA will notify stakeholders when revisions are considered
major or minor. To facilitate version control, the EPA will designate a title, version number and
date for all of the relevant documents it produces, as indicated below:
•	WaterSense Home Certification System
•	Version X.Y
•	Month, Day, Year
10.0 For More Information
For inquiries or other questions related to this home certification system or the WaterSense
Specification for Homes, Version 2.0, please contact the WaterSense Helpline at (866) WTR-
SENS (987-7367) or watersense@epa.gov.
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Appendix A:
Draft Application for Home Certification Organization
(HCO) and Proposed Certification Method (PCM)
Approval
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Draft Application for
Home Certification Organization and
Proposed Certification Method Approval
WaterSense
Application for Home Certification Organization (HCO) and
Proposed Certification Method (PCM) Approval
Home Certification Organizations (HCOs) seeking approval from the U.S. Environmental
Protection Agency's (EPA's) WaterSenseฎ program to operate a Proposed Certification Method
(PCM) as a WaterSense Approved Certification Method (WACM) and certify and label homes
for WaterSense should complete this application. As described in the WaterSense Home
Certification System, EPA will use the completed application and any supporting materials to
evaluate whether 1) the HCO meets the organizational eligibility requirements and 2) the HCO's
PCM can effectively differentiate homes that meet the water efficiency requirement in the
WaterSense Specification for Homes.
Mail this form and attachments to: OR Email this form and attachments to:
EPA WaterSense Program	WaterSense Helpline
c/o ERG	watersense@epa.gov
2300 Wilson Boulevard
Suite 350
Arlington, VA 22201
For more information, please contact the WaterSense Helpline at (866) WTRSENS (987-7367)
or watersense@epa.gov.
Section A: General HCO and Proposed Certification Method Information
Home Certification Organization:	
Contact name:	
Address:	
City:	State:	ZIP:	
Telephone:	
Email:	
HCO website (if applicable):	
Program website (if applicable):	
PCM Building Eligibility (select all that apply):
Single-family	Multifamily
~	New Construction	~ New Construction
~	Existing Construction	~ Existing Construction
Geographic region in which PCM will be offered:
~	National
~	Regional
~	Local
List Applicable States or Counties:	
List Applicable County(ies) or City(ies):
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Application for
Home Certification Organization and
Proposed Certification Method Approval
WaterSense
By signing this application, I confirm that all the information included in this form is accurate and
true, and that the organization named above is structured so as to give confidence in its
competence and integrity as an HCO such that it will not allow commercial, financial, or other
interests to compromise its impartiality.
Note: Please review the WaterSense Home Certification System before completing this
application. For reference, EPA has identified in parentheses the relevant section(s) of the
WaterSense Home Certification System that details the specific requirements.
Section B: Documentation of Organizational Requirements (WaterSense Home
Certification System, Section 4.0)
HCOs must submit in a separate document(s) the relevant procedures and include where EPA
can find information related to each organizational requirement in the procedures. If the
procedures described below are not part of an existing procedural document for the
organization, please attach a separate written narrative describing how the HCO will fulfill the
requirement(s) and/or reference appropriately below.
Section B. 1: Use of Designees (WaterSense Home Certification System, Sections 4.0 and 4.2)
The HCO may delegate many of the organizational requirements to a designee(s) (see Section
4.2 of the WaterSense Home Certification System for a list of exceptions). A designee can be a
provider or other organization/individual capable of adhering to WaterSense's certification
requirements, as relevant to the specific responsibility being designated.
Does the HCO intend to use designees in its fulfilment of any of the responsibilities related to
WaterSense? Select one:
C Yes	C No
If yes, please use the boxes in following sections to elaborate on the role of designees in
meeting the applicable requirements. Also indicate the relevant supporting documentation that
describes the policies the designee is required to follow and the HCO's procedures for
overseeing the designee(s) and the fulfillment of their responsibilities, including the process by
which the HCO will remove a designee if they fail to meet the HCO's requirements.
Section B.2: Independent Oversight (WaterSense Home Certification System, Section 4.1.1):
The HCO shall maintain independent oversight procedures to ensure that the certification and
labeling of homes for WaterSense is governed in a fair and impartial manner, including
maintaining an independent oversight committee(s).
Use the table below to demonstrate that the HCO has established procedures for independent
oversight. If the information is included in the supporting documentation, use the left two
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columns to indicate the title of the document and the section/page numbers. Otherwise, use the
right column to briefly describe the HCO's procedures.
Title of Relevant Supporting
Documentation
Section/Page
Numbers
Briefly Describe Independent Oversight Related
to WaterSense



Section B.3: Quality Assurance (WaterSense Home Certification System, Section 4.1.2):
The HCO shall implement quality assurance procedures that ensure that verifiers consistently
inspect and document compliance in accordance with the WaterSense Specification for Homes,
which includes the Mandatory Checklist and, by reference, the technical requirements of the
HCO's WACM.
Use the table below to demonstrate that the HCO has established procedures for each element
of quality assurance. Indicate the title of the relevant document and the section/page numbers
that describe the procedures.
Quality Assurance Element
Title of Relevant Supporting
Documentation
Section/Page
Numbers
Labeled Home Auditing


Verifier Qualification


Verifier Discipline


Complaint Resolution


Quality Assurance Documentation


Briefly describe how the elements of quality assurance (listed above) are conducted, including the use
of designees to fulfill anv of the requirements:
Section B.4: Verifier Training and Authorization (WaterSense Home Certification System,
Section 4.1.3)
The HCO shall train and authorize verifiers to verify homes in accordance with the WaterSense
Specification for Homes, which includes the Mandatory Checklist and, by reference, the
technical requirements of the HCO's WACM.
Use the table below to demonstrate that the HCO has established procedures for verifier
training and authorization. Indicate the title of the relevant document and the section/page
numbers that describe the procedures.
Verifier Training Element
Title of Relevant Supporting
Documentation
Section/Page
Numbers
Verifier Training


Verifier Training Reciprocity


Verifier Authorization


Update Integration


Briefly describe how the verifier training elements (listed above) are conducted, including the use of
designees to fulfill anv of the requirements:
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Section B.5: Home Verification Protocols (WaterSense Home Certification System, Section
4.1.4)
The HCO shall implement home verification protocols.
Use the table below to identify the title of the relevant document and the section/page numbers
that describe the relevant verification procedures. Include reference to the document that
describes the home verification protocols. If relying on a designee to develop and implement
home verification, include reference to the procedures for evaluating and approving the
designee's(s') home verification protocols. The HCO may offer builder partners the opportunity
to participate in a sampling protocol if a builder partner intends to certify multiple homes within
the same subdivision, planned community, or multifamily building.
C Yes	C No
If Yes, include reference to the document that describes the sampling protocol in the table
below.
Home Verification Requirement
Title of Relevant Supporting
Documentation
Section/Page
Numbers
Home Verification Protocols


Sampling Protocol (If applicable)


Verifier Adherence to Verification
Protocols


Verification of Builder Partnership
with WaterSense


Maintenance of Verification
Documentation


Briefly describe how the elements of home verification (listed above) are conducted, including the use
of designees to fulfill any of the requirements:
Section B.6: Impartiality (WaterSense Home Certification System, Section 4.1.5)
The HCO shall have a systematic method for ensuring financial, legal, and ethical impartiality as
it pertains to verifying a home's compliance with the WaterSense Specification for Homes and
the HCO's WACM, and as it pertains to issuing the WaterSense label. The HCO's impartiality
management strategy shall account for both organizational and individual conflicts of interest
(COI). Organizational COI pertains to the organization(s) responsible for various aspects of
home verification and certification, whereas individual COI pertains to a specific person involved
in the verification or certification decision.
Use the table below to demonstrate that the HCO has established the relevant procedures for
impartiality. Indicate the title of the relevant document and the section/page numbers that
describe the procedures.
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Date [TBD]
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WaterSense
Application for
Home Certification Organization and
Proposed Certification Method Approval
Impartiality Requirement
Title of Relevant Supporting
Documentation
Section/Page
Numbers
HCO Impartiality


Verifier Impartiality


Designee Impartiality (if applicable)


Briefly describe how the impartiality requirements (listed above) are implemented:
Section B.7: Messaging and Reporting (WaterSense Home Certification System, Section 4.1.6)
The HCO shall ensure information flow from WaterSense to the HCO (messaging) and
information flow from the HCO to WaterSense (reporting). The HCO shall also ensure that
relevant information is conveyed in a timely manner between WaterSense and the HCO's
designee(s), builders, and verifiers.
Use the table below to demonstrate that the HCO has established the relevant procedures for
messaging and reporting. Indicate the title of the relevant document and the section/page
numbers that describe the procedures.
Messaging and Reporting
Requirement
Title of Relevant Supporting
Documentation
Section/Page
Numbers
Centralized Messaging Structure


Inquiry Response System


Briefly describe how messaging and reporting are implemented, including requirements for designee
and verifier reportina to the HCO:
Section B.8: Maintaining Final Authority of the WaterSense Label (WaterSense Home
Certification System, Sections 4.2 and 5.3)
The HCO may not relinquish its final authority over the certification decision and issuance of the
WaterSense label. Briefly describe, or provide reference to documentation of, the HCO's
procedures for maintaining final authority over the certification decision and issuance of the
WaterSense label.	
Section C: Certification Method Development Process (WaterSense Home
Certification System, Section 4.3)
In developing the technical requirements included in the PCM, the HCO shall follow one of the
three approaches outlined below to demonstrate that the requirements were developed
following an open and transparent process.
Select the certification method development process that applies to the PCM under
consideration and complete only the relevant section below.
Date [TBD]
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Application for
Home Certification Organization and
Proposed Certification Method Approval
~	Utilizes an American National Standards Institute (ANSI) approved standard
~	Follow requirements for the jurisdiction with authority (for programs run by public
agencies)
~	Demonstrate development in accordance with the certification method alternative
development requirements (based on the ANSI Essential Requirements)
Section C. 1: Utilizes an ANSI approved standard
Name of ANSI Standard:	
List any deviations from the Standard's requirements that the HCO intends to implement for the
purpose of WaterSense certification:	
Section C.2: Follow requirements for the jurisdiction with authority (for programs run by
public agencies)
Name of Jurisdiction with Authority:	
Title and relevant section/page numbers of the administrative and transparency requirements
for standards and policy development of the jurisdiction having authority (include a copy of the
requirements with the application):	
Section C.3: Development in accordance with the certification method alternative
development requirements
Complete the table below identifying the specific supporting documentation that describes how
each criterion was met.
Criteria
Supporting Documentation
Section/Page
Numbers
Openness


Lack of dominance
Balance


Notification of certification
method development


Consideration of views and
objections


Consensus vote


Appeals


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EPA
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Date [TBD]
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Application for
Home Certification Organization and
Proposed Certification Method Approval
Section D: Proposed Certification Method Requirements (WaterSense Home
Certification System, Section 4.4)
The EPA shall evaluate the technical effectiveness of the PCM in accordance with its
WaterSense Technical Evaluation Process for Approving Home Certification Methods to ensure
that the PCM can differentiate homes that meet the efficiency requirement in the WaterSense
Specification for Homes. Upon approval, the PCM becomes the HCO's WACM that can be used
in conjunction with the Mandatory Checklist to verify a home's compliance with the WaterSense
Specification for Homes.
Review the WaterSense Technical Evaluation Process for Approving Home Certification
Methods to understand how EPA will evaluate the technical effectiveness of the PCM.
1.	Provide a copy of the PCM
2.	PCM Water Efficiency Thresholds and Criteria
Identify the thresholds or criteria (e.g., prescriptive requirements, number of points, rating score,
certification level) that the HCO intends to meet the water efficiency requirement in the
WaterSense Specification for Homes and that the HCO subsequently intends to designate for
homes to earn the WaterSense label. Provide additional documentation if necessary.
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3. Nuances of the PCM for Consideration in EPA's technical evaluation.
Describe any nuances of the PCM that will facilitate EPA's technical evaluation. Provide
additional documentation if necessary.	
4. Provide Justification for Any Additional Water Savings Credit
If the PCM includes requirements for features not specifically included or the HCO believes are
not adequately accounted for in the WaterSense Technical Evaluation Process for Approving
Home Certification Methods, submit technical justification for EPA's consideration in assessing
appropriate credit for the requirement. This justification shall include:
•	The expected effect on water use per household per day or per occupant per day for
standard models or standard design.
•	The expected water savings per household per day or per occupant per day from
incorporation of more efficient product models or system design.
•	Studies, data, and other supporting materials on the use of the specific design or
technology in the field that support the HCO's claims.
Date [TBD]
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WaterSense
Application for
Home Certification Organization and
Proposed Certification Method Approval
•	For systems that supply alternative water sources (such as rain water or greywater
systems), the temporal resolution with which water collection and use is calculated.
•	For systems that supply alternative water sources (such as rain water or greywater
systems), the percentage of useful water that the system is anticipated to yield after
treatment.
Does the HCO wish to request consideration for additional water savings credit?
r Yes	r No
If yes, provide appropriate justification per the requirements listed above (or attach
documentation separately if more space is needed).	
Date [TBD]
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