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FACT SHEET

EPA's Final Lead and Copper Rule Improvements
Small Water Systems

October 2024

Introduction

EPA is finalizing the Lead and Copper Rule Improvements (LCRI) to significantly reduce exposure to lead in
drinking water. The final rule builds on the 2021 Lead and Copper Rule Revisions (LCRR), which modified the
previous Lead and Copper Rule (LCR). The final LCRI strengthens five main focus areas: achieving lead pipe
replacement within 10 years, locating legacy lead pipes, improving tap sampling, lowering the lead action level,
and strengthening protections to reduce lead exposure. The LCRI strengthens nationwide requirements to
protect children and adults from lead in drinking water. These advancements are commonsense, achievable,
and built on actions taken by States and cities.

This fact sheet is designed to help small water systems, defined as those serving 10,000 persons or fewer
under the Lead and Copper Rule Improvements (LCRI), understand the LCRI requirements. The LCRI includes
changes to the lead action level and requirements related to the service line inventory and replacement, tap
monitoring, corrosion control treatment (CCT) and water quality parameter (WQP) monitoring, public
education and outreach, and lead testing in schools and child care facilities. Please see the additional EPA fact
sheets available on EPA's LCRI website for information on LCRI requirements in these rule areas. The LCRI also
includes flexibilities available to a subset of small systems serving 3,300 persons or fewer which are described
in this fact sheet.

Small Water System Flexibilities for Optimal Corrosion Control Treatment (OCCT)

Because of the challenges that small systems may face in implementing OCCT, the LCRI allows smaller water
systems (serving 3,300 persons or fewer), the option to seek State approval to use a compliance alternative to
OCCT. Note that States may choose to not adopt regulations to provide this compliance flexibility. If a water
system's State does not adopt this, then it is not available to that water system.

Which systems can qualify for a Small System compliance alternative if approved by the State?

•	CWS serving 3,300 or fewer people, or

•	NTNCWS serving any size population.

What are the compliance alternatives?

The LCRI includes two compliance alternatives for a system that
exceeds the lead action level of 0.010 mg/L but not the copper action level of 1.3 mg/L: (1) point-of-use (POU)
devices; or (2) replacing all lead-bearing plumbing materials. The State must approve the use of the water
system's recommended option.

Option 1: Point-of-Use Devices

Systems approved for the point-of-use device compliance option must follow the requirements in Table 4.

Replacement of lead and galvanized
requiring replacement (GRR) service lines is
required of all systems and therefore, is not a
small system compliance alternative.

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Keep in mind that if the water system chooses the point-of-use option, it MUST operate and maintain the
point-of-use devices even if the system no longer exceeds the lead action level, unless the system receives
State approval to select another compliance option.

Table 4: Small System Flexibility Program Requirements for Point-of-Use Devices

Description

Provide and
install the
device(s)1

•	For CWSs, at least one point-of-use (POU) device must be installed in every
household and at every tap that is used for cooking and/or drinking in every non-
residential building.

•	For NTNCWSs, a POU device must be installed on every tap that is used for
cooking and/or drinking.

Maintain the
POU device

•	Maintain the POU device including but not limited to changing filter cartridges
and resolving any operational issues.

•	The POU device must be equipped with mechanical warnings to ensure that
consumers are automatically notified of operational problems.

•	Provide documentation to the State to certify maintenance of the POU devices,
unless the State waives this requirement.

Provide public
education

• Provide public education to users on the proper use of POU devices. Can be
provided in person, by mail, or other State-approved method.

Monitor POU
performance

• Collect a first-liter tap sample after a minimum six-hour stagnation period and
after the water passes through the POU device. Systems must monitor one-third
of the devices each year so all are monitored within a 3-year cycle.

Provide sample
results

• Report the results from the tap sampling no later than 10 days after the end of
the tap sampling period. If a sample exceeds 0.010 mg/L, notify the persons
served by the POU device, and/or building management no later than one
business day of receiving the tap sample results.

Take corrective
action

• Within 30 days, the system must document and take corrective action at each
site where the sample result exceeds 0.010 mg/L. If the corrective action is not
completed within 30 days, the system must provide documentation to the State
within 30 days explaining why it was unable to correct the issue.

^he POU device must be independently certified by a third party to meet the American National Standards
Institute (ANSI) standard applicable to the specific type of POU unit to reduce lead in drinking water.

Option 2: Replacement of Lead-bearing Materials

Water systems that have control over all plumbing in the buildings they serve and have no lead, GRR, or
unknown service lines may seek State approval to replace of all lead-bearing plumbing that does not meet the
definition of "lead-free".3 Systems must replace all lead-bearing plumbing materials on a within one year (or
sooner if required by the State) and submit a certification to the State.

3Water systems must replace all plumbing that does not meet the definition of "lead free" in section 1417 of the
Safe Drinking Water Act, as amended by the Reduction of lead in Drinking Water Act and any future amendments
applicable at the time of replacement.

What if a water system has existing Corrosion Control Treatment?

If a water system already has CCT and exceeds the lead action level, regardless of whether it is considering

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small system compliance options, the system must:

•	Continue to operate and maintain its CCT until the State determines in writing that it is no longer

necessary.

•	Meet any requirements that the State determines to be appropriate before implementing a State

approved alternative compliance option.

When must the water system submit its compliance alternative recommendation to the State?

If the water system is requesting to use either the POU device option or replace all lead-bearing plumbing
materials, it must submit a recommendation to the State within six months of the end of the tap sampling
period in which the system exceeded the lead action level. For example, if the system exceeded the lead action
level during the monitoring period of January 1 through June 30, 2028, the system's recommendation is due to
the State by December 31, 2028. Within six months of the system's recommendation, the State must approve
or disapprove the recommendation.

If the system chooses to install or re-optimize OCCT following a lead action level exceedance, it does not need
to submit a small system compliance recommendation to the State and must comply with the applicable
requirements.

What if the State does not approve the water system's recommendation?

The State may designate the other compliance alternative as an option. If the State does not approve the
water system's recommendation and does not designate an alternative, the water system must comply with
the requirements to install or re-optimize CCT. The State may require the system to conduct a study or may
specify OCCT.

Additional LCRI Flexibilities Available to Small Systems

Tap Sampling

•	Systems serving 3,300 or fewer people may continue to qualify for monitoring every nine years at the
reduced number of sites as the LCRI did not modify this provision.

•	Systems serving 3,300 or fewer people with lead and/or GRR service lines must conduct standard
monitoring for at least two consecutive six-month monitoring periods following the LCRI compliance
date, unless they already follow the LCRI tap sampling protocols prior to the LCRI compliance date. In
the latter case, the system can remain on its existing sampling schedule.

Public Education

•	CWSs serving 3,300 or fewer people have flexibilities in the number of outreach activities that the LCRI
requires for CWSs that do not meet the mandatory service line replacement rate.

•	CWSs serving 3,300 or fewer persons may continue to limit certain aspects of their public education
programs required after a lead action level exceedance as the LCRI has not modified these flexibilities.

CCT

•	The LCRI provides a pathway for all water systems to defer CCT steps and avoid a more burdensome
OCCT study (but maintain any existing CCT) if they replace all remaining lead and GRR service lines in
five years or less. While available to systems of all sizes, EPA anticipates systems with fewer lead and
GRR service lines are likely to take advantage of this provision.

•	Systems serving 10,000 or fewer people are not required to conduct a pipe rig study, unless required
by the State.

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Funding, and Technical Assistance

There are a number of pathways for systems to receive support for lead and GRR service line replacement and
related activities, including low- to no-cost financing through the Drinking Water State Revolving Fund
(DWSRF); lead remediation grants under authorities established by the Water Infrastructure Improvements for
the Nation (WIIN) Act; and low-cost financing from the Water Infrastructure Finance and Innovation Act
(WIFIA) program. EPA strongly encourages water systems to evaluate these available funding opportunities to
support LCRI implementation and full service line replacement. Water systems are encouraged to contact their
State's DWSRF program to learn about project eligibilities, requirements, and how to apply for assistance
through the DWSRF.

To support eliminating LSLs, the Infrastructure Investment and Jobs Act, also referred to as the Bipartisan
Infrastructure Law (BIL), included $15 billion specifically appropriated for service line replacement projects and
associated activities directly connected to the identification and replacement of lead service lines. The BIL also
included over $11.7 billion for the Drinking Water State Revolving Fund General Supplemental, which can also
be used for lead service line replacement as well as other drinking water projects.

EPA's water technical assistance (WaterTA) supports communities to identify water challenges; develop plans;
build technical, managerial, and financial capacity; and develop application materials to access water
infrastructure funding that results in more communities with applications for Federal funding, quality water
infrastructure, and reliable water services. EPA is also providing significant technical assistance to communities
through efforts such as the Get the Lead Out Initiative and Lead Service Line Replacement Accelerators, which
assist efforts to conduct service line replacement.

EPA provides several resources for systems on Federal funding and technical assistance. For more information,
visit:

•	Identifying Funding Sources for Lead Service Line Replacement

•	Funding and Technical Resources for Lead Service Line Replacement in Small and Disadvantaged
Communities

•	Strategies to Achieve Full Lead Service Line Replacement

•	WaterTA

Additional Resources

Learn more about water infrastructure funding opportunities by visiting EPA's water infrastructure page.

Additionally, EPA has published multiple online resources for systems to use concerning lead in drinking water.
For more information, visit:

•	Basic Information About Lead in Drinking Water

•	Lead and Copper Rule Implementation Tools

•	Information on Lead Service Lines

•	Engaging with the Community on Lead Service Lines

Disclaimer: This document is being provided for informational purposes only to assist members of the public, States, Tribes, and/or public water systems
in understanding the Lead and Copper Rule Improvements (LCRI). It includes descriptions of regulatory requirements. In the event that there are any
differences, conflicts, or errors between this document and the LCRI, States, Tribes, and/or public water systems should refer to the LCRI. This document
does not impose any legally binding requirements on the EPA, States, Tribes, or the regulated community. Further, this document does not confer legal
rights or impose legal obligations on any member of the public. In the event of a conflict between the discussion in this fact sheet and any statute or
promulgated regulation, the statute and any promulgated regulations are controlling.

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