State Public Water System Supervision

CFDA 66.432 Active Grant
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Program Funding

Annual program obligations reported to SAM.gov.

Latest annual funding (estimated)
$116.7M FY2026
$57.2M
FY24
$48.7M
FY25
$116.7M
FY26*
* estimated

Funded Projects

Examples of what this program has supported.

FY2025 In FY 2025 49 States, five territories, and one Indian Tribe were awarded grant funding under the PWSS Program. The majority of the grant funds will be used for State, territorial, or Tribal governmental salaries to allow the governments to: develop and maintain State drinking water regulations; develop and maintain an inventory of public water systems throughout the State; develop and maintain a database housing compliance information on public water systems; conduct sanitary surveys on the public water systems; review public water system plans and specifications to ensure systems meet State design standards; provide technical assistance and training to water system managers and operators to ensure they are knowledgeable of the State requirements and best treatment and operation practices; conduct of a program to ensure that the public water systems keep their consumers informed about the quality of the water they are providing; inspect and certify laboratories that are allowed to perform the analysis of drinking water that will be used to determine compliance with the drinking water regulations; and conduct an enforcement program to ensure that the public water systems comply with all of the requirements. States, territories, and Tribes also use the grant funds to upgrade and maintain the data systems that are used to store and track information on public water systems.

Program Objective

The objective of these grants is to provide financial assistance to eligible States and Tribes, those that have Primary Enforcement Responsibility for the Public Water System Supervision (PWSS) Program, for implementation and enforcement of the requirements of the Safe Drinking Water Act that apply to public water systems. In cases where a State or a Tribe does not have a Primary Enforcement Responsibility program, the EPA is authorized to use funds that would have otherwise been made available to the State or the Tribe to assist it in direct implementation of the PWSS program. The fundamental goal of the PWSS Program, and the grants, is to ensure that public water systems comply with the National Primary Drinking Water Regulations listed in 40 CFR 141. State drinking water agencies, which have Primary Enforcement Responsibility for the PWSS Program, and Indian Tribes that receive PWSS grants are to use them to ensure that public drinking water systems, of all types, and of all sizes: (1) are currently in compliance with the drinking water regulations and remain in compliance, (2) are working towards and in the process of achieving compliance when these systems are noncompliant, and (3) are preparing for future compliance with any new drinking water regulations that will be taking effect in the current or following year. Furthermore, State drinking water agencies, which have Primary Enforcement Responsibility for the PWSS Program, and Indian Tribes that receive PWSS grants are required to use the funds to update and maintain its PWSS program to comply with the National Primary Drinking Water Regulations Implementation requirements listed in 40 CFR 142 to ensure that the State or Tribal PWSS program is capable of conducting oversight of all public water systems as new drinking water rules, new public water systems, and/or drinking water program requirements become effective.

Eligibility

Eligible Applicants

  • U.S. State Government
  • U.S. Territory Government
  • Federally Recognized Tribal Government

Eligibility is limited to the governments of the fifty States; the District of Columbia; the Commonwealth of Puerto Rico; the Northern Mariana Islands; the Virgin Islands; Guam; American Samoa; and federally recognized Tribes, that have either assumed primary enforcement responsibility for the PWSS Program or that want to develop a program that will allow them to seek delegation for a PWSS Program. EPA may also use funds allotted for a State or Tribal program, if the State or Tribe does not have, or is not developing, primary enforcement responsibility, or EPA may use all or part of the funds to support the PWSS Program in absence of an acceptable State program. Eligibility is also limited to a single agency within each State, Territory, or Tribe - an agency that has been designated by the jurisdiction's Governor or Chief Executive Officer. Primary Enforcement Responsibility for the Public Water System Supervision Program is provided for in 40 CFR 142 (https://ecfr.federalregister.gov/current/title-40/chapter-I/subchapter-D/part-142?toc=1).

Beneficiaries

  • U.S. State Government
  • U.S. Territory Government
  • Federally Recognized Tribal Government
  • Local
  • Unrestricted by Entity Type
  • Unrestricted by Individual Type

The beneficiaries are the agencies within the fifty States; the District of Columbia; the Commonwealth of Puerto Rico; the Northern Mariana Islands; the Virgin Islands; Guam; American Samoa; and federally recognized Tribes, that have been designated by the jurisdiction's Governor or Chief Executive Officer as being responsible for the supervision of water supplies within the State, Territory, or Tribe.

How to Apply

Award Procedure

The grant application and Program Plan are reviewed by the appropriate EPA Regional Office, and if approved, are signed by the Regional Administrator, who then awards the funds to the recipient.

Generally 60 days.

Program details & compliance

Description

The objective of these grants is to provide financial assistance to eligible States and Tribes (those that have Primary Enforcement Responsibility for the Public Water System Supervision (PWSS) Program, for implementation and enforcement of the requirements of the Safe Drinking Water Act that apply to public water systems. In cases where a State or a Tribe does not have a Primary Enforcement Responsibility program, EPA is authorized to use funds that would have otherwise been made available to the State or the Tribe to assist it in direct implementation of the PWSS program. The fundamental goal of the PWSS Program, and the grants, is to ensure that public water systems comply with the National Primary Drinking Water Regulations listed in 40 CFR 141: https://ecfr.federalregister.gov/current/title-40/chapter-I/subchapter-D/part-141.

Mission Categories

Primary: Community Water Supply

Use of Funds

Allowed Uses

The funds are to be used to develop and implement a Public Water System Supervision Program adequate to enforce the requirements of the Safe Drinking Water Act and associated program regulations found in 40 CFR Parts 35, 141, 142, and 143. Assistance agreement awards under this program may involve or relate to geospatial information. Further information regarding geospatial information may be obtained by viewing the following website: Geospatial Resources at EPA.

Matching Requirements

Federal assistance is limited to 75 percent of total, eligible program costs (40 CFR 35.175).

Reporting & Compliance

Audit Required
Yes — Determined at Time of Award
Records Retention
3 years

Applicable 2 CFR 200 Subparts

  • Subpart B — General Provisions
  • Subpart C — Pre-Federal Award Requirements
  • Subpart D — Post-Federal Award Requirements
  • Subpart E — Cost Principles
  • Subpart F — Audit Requirements

Formula

State allotments are computed through use of a formula, as prescribed in Public Law 93-523 Section 1443 (a)(3) and (a)(4), 40 CFR 35.172 (42 U.S.C. 300j-2). Funds appropriated each year are allotted on the basis of: (a) State, Territory, or Tribal population (20 percent) as contained in the most currently available (published) U.S. Census Bureau data; (b) State, Territory, or Tribal geographical area (10 percent) as contained in the most currently available (published) U.S. Census Bureau data; (c) the number of active community and non-transient non-community water systems being regulated by the State, Territory, or Tribe that are on record in EPA's data system (56 percent); and (d) the number of active transient non-community water systems being regulated by the State, Territory, or Tribe that are on record in EPA's data system (14 percent). All States, the District of Columbia, and Puerto Rico are eligible for a minimum of $334,500 (which is equal to 1 percent of the FY 1989 PWSS Program appropriation). The American Samoa, Guam, the Northern Mariana Islands, and the Virgin Islands are eligible for a minimum of $111,500 (which is equal to 1/3 percent of the FY 1989 PWSS Program appropriation). Up to seven percent of the amount appropriated for the PWSS Program is set-aside to support Public Water System Supervision programs on Indian lands (including grants to Tribes) in accordance with EPA Grant Regulations. The formula factors of population and land area are statutory. The other factors, and all of the weightings, are Agency imposed. Federal assistance is limited to 75 percent of total, eligible program costs (40 CFR 35.175).

Contacts

Grant Jiang
(202) 564-1393
Environmental Protection Agency, Office of Ground Water and Drinking Water, 1200 Pennsylvania Avenue, N.W. (Mail Code: 4606M), Washington, DC 20460
Data from SAM.gov Federal Assistance Listings. Source published: 2026-06-15. Spec v2.0. Last synced: 2026-07-08 03:03:36.