Protecting Source Water with the
Clean Water and Drinking Water State Revolving Funds
Each of the 50 states and Puerto Rico operates its own Clean Water and Drinking Water State Revolving Fund
(SRF) programs. They receive annual capitalization grants from EPA, which in turn are used to provide low-
interest loans and other types of assistance to eligible recipients for water infrastructure and water quality
projects. Under the Drinking Water State Revolving Fund (DWSRF), states have the option to keep a portion
of their capitalization grant as "set-asides" to fund DWSRF and related programs (e.g. capacity development,
source water protection) and provide non-infrastructure support to communities. As recipients repay their
loans, the repayments and interest earnings flow back into the dedicated revolving fund. These funds may
then be used to make additional loans to other eligible recipients. These funds can also be leveraged with
other public and private financing sources to create a powerful, innovative financing solution for water
infrastructure and water quality projects. With the
historic investment in national infrastructure through
the Bipartisan Infrastructure Law, there are increased
opportunities for source water protection through the
SRFs.
Both the Clean Water SRF (CWSRF) and DWSRF
programs are capable of financing source water
protection (SWP) activities in different ways. The
CWSRF may provide financing to public, private, or
nonprofit entity for many types of SWP projects,
including both grey and green infrastructure. The
DWSRF differs, in that SWP is financed through the
set-asides. States may use the set-asides for various
SWP activities. They can administer the state SWP
program, provide technical assistance, and fund
implementation activities. DWSRF set-aside assistance
can be provided to water systems or other entities
depending on the activity.
ADDITIONAL RESOURCES
This factsheet complements the following
documents that describe CWSRF and DWSRF
eligibilities for source water protection activities:
•	Expanded Source Water Protection-Related
Eligibilities Under the DWSRF's Local
Assistance and Other State Programs Set-
Aside
•	Protecting Source Water with the DWSRF Set-
Asides
•	Using the DWSRF Set-Asides for Source Water
Protection Loans
•	Protecting Source Water with the Clean
Water State Revolvine Fund

-------
Source Water Eligibilities
Source Water Protection Eligibilities by Fund
Clean Water State Revolving Fund
Loan Fund
Drinking Water State Revolving
Fund Set-Asides
•	Development and updates of SWP plans
•	Land conservation through acauisition or conservation
easements
•	Agricultural best management practices
•	Decentralized wastewater treatment (e.g.. seDtic tank
repair and replacement)
•	Remediation or prevention of contamination from
resource extraction sites
•	Habitat restoration
•	Shoreline/riparian buffers
•	Stormwater management
•	Contaminated site clean-UD
•	Forest thinning for wildfire risk management
•	Development and initial delivery of public outreach and
education materials
•	And more
For a comprehensive list of CWSRF eligibilities, see:
Overview of Clean Water State Revolving Fund Eligibilities
•	Development, updates and implementation of SWP
plans
•	Development and updates of source water
assessments
•	Purchasing land or conservation easements for the
purpose of SWP
•	Agricultural best management practices (such as
cover crops or fences to protect water sources)
•	Well abandonment
•	Septic system surveys and replacement
•	Outreach and education
•	Development of local ordinances to protect source
waters
•	Data collection and analysis to define a threat to
source water quality or quantity
•	And more
For a comprehensive list of DWSRF Set-Aside eligibilities
for source water protection, see: Using the DWSRF Set-
Asides for Source Water Protection Loans
LEVERAGING SRF FUNDS
CWSRF and DWSRF funds can be leveraged with each other and other funding programs that protect
and improve freshwater resources and public health. For example, several states have used funds from
their DWSRF set-asides to develop source water assessments, appraisals, and plans to meet application
requirements for CWSRF loans and Clean Water Act Section 319 Nonpoint Source (NPS) Management grants. In
some states, CWSRF repayment funds are used by borrowers to help initiate projects by matching other federal
grants, like Clean Water Act section 319 nonpoint source management grants and United States Department
of Agriculture financing. Savings offered through SRF financing also offers a way to help disadvantaged
communities achieve access to safe drinking water.
LEARN MORE ABOUT FUNDING
SRF programs are managed by the states and assistance is distributed directly from state agencies. The
procedures and funding of eligible projects may vary according to the priorities of each state.
Those interested in source water protection should seek out their state's CWSRF and DWSRF programs to
determine whether these types of projects are eligible in their state and to participate in the annual process
that determines which projects are funded. The SRFs in your state will be able to guide potential assistance
recipients through the application process.
CWSRF program website: www.epa.gov/cwsrf/state-cwsrf-program-contacts
DWSRF program website: www.epa.gov/dwsrf/state-dwsrf-website-and-contacts
Contact the EPA CWSRF team at CWSRF(a)epa.gov and the EPA DWSRF team at safewater(a)epa.gov.
Protecting Source Water with the EPA State Revolving Funds
2
EPA 832-S-22-001 April 2022

-------
SOURCE WATER PROTECTION CASE STUDY:
WASHINGTON CWSRF AND DWSRF COORDINATE FOR
LAND CONSERVATION
The Skagit Public Utility District (PUD) provides drinking water to more than 65,000 people in Skagit
County, serving three cities as well as suburban and rural areas. The Gilligan Creek area of the Cultus
Mountain Watershed provides 45 percent of the PUD's source water for its Judy Reservoir Water
System. Until recently, timber companies owned all property around Gilligan Creek. In 2012, Skagit
PUD went through a comprehensive updating of its watershed control program and determined that
finding a way to protect the water quality of this stream was critical to the success of the Judy System.
Impacts from activities such as logging and road construction led the PUD to explore the concept of
buying land near the intake for the water system to protect the long-term success of the Judy System.
To do this, the PUD secured low-cost financing through a grant from the DWSRF and a CWSRF loan
with principal forgiveness.
First, The PUD used a $45,000 source water protection grant funded by the DWSRF Local Assistance
Set-Aside through the Washington Department of Health for the appraisal and survey of the property.
Knowing the approximate value of the property helped staff begin the conversation. Interested in
receiving a loan for the land acquisition, the PUD, its board of commissioners, local conservation
groups, and representatives of Skagit Land Trust all brainstormed ideas for funding sources to repay
the loan.
After the appraisal was complete, a well-established relationship with the landowner helped Skagit
PUD start the negotiations to buy the property in the spring of 2017. Skagit PUD secured a $1.5 million
loan (with $397,500 principal forgiveness) with 1 percent interest from the CWSRF to purchase and
protect the 250 acres of critical watershed in perpetuity for its customers. The PUD will pay back the
loan through customer revenues and proceeds from selective timber harvests. This collaboration
between multiple state agencies and both DWSRF and CWSRF funding sources resulted in a successful
priority drinking water protection project. The purchase of this 250-acre forest at Gilligan Creek
protects the quality of drinking water for Skagit PUD's customers for many years to come.
Protecting Source Water with the EPA State Revolving Funds
EPA 832-S-22-001 April 2022
3

-------