Water Pollution Control State, Interstate, and Tribal Program Support

Active

Assistance listing
66.419
Agency
Grant awards
3,557 $1,867,978,682 in federal obligations

Program facts

Also known as
Section 106 Grants
Assistance types
  • Formula Grant
  • Project Grant
  • Cooperative Agreement
Treasury account
  • 68-0103-0-1-304
More information

Program details come from SAM.gov Assistance Listings. Updated . Grant award figures come from USAspending.gov.

About this program

The Environmental Protection Agency awards grants under the Water Pollution Control State, Interstate, and Tribal Program Support program (CFDA 66.419) to fund water quality monitoring, assessment, and pollution prevention activities for states, territories, interstate agencies, and eligible Indian tribes, with the most recent award issued October 1, 2026.

The program funds surface and groundwater quality monitoring, water quality standards development, total maximum daily load (TMDL) development, wastewater permitting and enforcement, biological and chemical sampling, data management systems, and compliance assistance. Representative recent awards include funding to the Interstate Environmental Commission for water quality monitoring and habitat restoration assessments in New York, New Jersey, and Connecticut ($944 thousand); the Menominee Indian Tribe of Wisconsin for water quality monitoring across 25 water bodies on tribal lands ($102 thousand); and Montana for expanded water quality standards development and statewide monitoring and assessment projects ($354 thousand).

The portfolio is heavily dominated by Formula Grants, which account for 74 percent of awards. Project Grants comprise 24 percent and Cooperative Agreements 2 percent. The Environmental Protection Agency (EPA) central office funds 3,025 awards representing $1.42 billion in federal dollars obligated. EPA Regions 9, 6, 3, 4, and 5 together account for an additional $393.9 million across 366 awards, covering 96 percent of the award portfolio. Combined federal dollars obligated reach $1.87 billion, with total obligated funding (including non-federal match) of $2.75 billion across 3,557 awards since 1994. Award activity has been steady, ranging from 43 to 74 awards annually over the past five years. Recent grants span typical magnitudes from $40 thousand to multi-million-dollar state programs, with Ohio EPA receiving $6.85 million and California $56.7 million for comprehensive water quality programs. The program does not currently post open solicitations; applicants must contact EPA Regional Offices for application deadlines and procedures.

Objective and description

Objective

To assist States (including territories and the District of Columbia), Indian Tribes qualified under CWA Section 518(e), and interstate agencies in establishing and maintaining adequate measures for prevention and control of surface and ground water

Description

To assist States, including territories and, the District of Columbia, Indian Tribes qualified under CWA Section 518(e), and interstate agencies in establishing and maintaining adequate measures for prevention and control of surface and ground water pollution from both point and nonpoint sources.

Eligibility

Applicant eligibility

Eligible entities include States (including the District of Columbia and territories), interstate water pollution control agencies as defined in the Federal Water Pollution Control Act, and Indian tribes qualified under CWA Section 518(e). Requirements of the program are based on Section 106 of the Clean Water Act, 2 CFR 200 and 1500 as applicable, and 40 CFR Parts 35 and 130.

Uses of assistance

Water pollution control grants are intended to provide continuing support for the prevention and abatement of surface and ground water pollution from point and nonpoint sources. Continuing and recurrent water quality management program activities funded include water quality planning and standards; monitoring and assessments; inspections and enforcement; permitting; training; advice and assistance to local agencies; and public information. Funds cannot be used for construction, operation, or maintenance of waste treatment plants, nor can they be used for costs financed by other Federal grants. 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.

Length and time phasing of assistance

One year; payments are approved quarterly and disbursed monthly.

How to apply

Preapplication coordination

Intergovernmental review applies to this assistance listing when proposed Federal financial assistance involves land use planning. Federal financial assistances to tribes is not subject to intergovernmental review. EPA financial assistance programs and activities subject to intergovernmental review that are subject to review under State single point of contact procedures are identified at https://www.epa.gov/grants/epa-financial-assistance-programs-subject-executive-order-12372-and-section-204-demonstration. Applicants for programs or activities subject to Intergovernmental Review that are not subject to State single point of contact review must provide directly affected State, areawide, regional, and local entities at least 60 days to review their application following notification by EPA that the application has been selected for funding as provided by 40 CFR 29.8(a) and (c). Informal meetings are held as needed between regional office, State, territorial, and Indian tribe applicant agencies during work plan development. The grant agreement must adequately reflect the priorities identified in the EPA Strategic Plan and any State/EPA Agreements. For additional information, contact the individual(s) listed as "Information Contacts".

Application procedure

Issuing office will provide location of application procedure details as appropriate."

Criteria for selecting proposals

Section 106 funds are awarded to State, territory, interstate, and Indian tribal agencies in accordance with overall water quality management needs, the requirements of programs covered by these agreements, and EPA Program guidance. Applications are also assessed consistent with the merit review regulations in 2 CFR 200.205.

Award procedure

EPA will conduct an administrative evaluation to determine the adequacy of the application in relation to grant regulations and to technical and program evaluation to determine the merit and relevance of the project. The Agency will then advise the applicant if funding is being considered. A final work plan will then be negotiated with the applicant.

Deadlines

Applications must be submitted according to dates established by the Regional Administrator. Contact the Regional Office for application deadlines.

Appeals

Disputes relating to matters other than the competitive selection of recipients will be resolved under 2 CFR 1500 Subpart E, as applicable.

Grant awards

Award Recipient Federal obligations Awarded
Under section 106 of the clean water act (33 U.S. Code 1256), the environmental protection agency (EPA) provides… 96247726 Interstate Environmental Commission $730,000
This agreement provides funding to menominee indian tribe of wisconsin to carry out its program to maintain, protect… 05E01952 Menominee Indian Tribe Of Wisconsin $84,000
This agreement provides funding to montana to carry out its program to maintain, protect, and improve the water quality… 00I06900 Montana Department Of Environmental Quality $353,925
This agreement provides funding to the alabama-coushatta tribe of texas to carry out its program to maintain… 02F85601 Alabama Coushatta Tribe Of Texas $86,843
The project focuses on developing and enhancing water quality monitoring across south dakota. IT aims to build a… 00I46700 The South Dakota Department Of Agriculture And Natural Resources $168,775
This agreement provides funding to idaho to carry out its program to maintain, protect, and improve the water quality… 03J23601 State Of Idaho Department Of Environmental Quality $168,775
This agreement provides funding to kansas to carry out its program to maintain, protect, and improve the water… 98791715 Kansas Department Of Health & Environment $168,775
This agreement provides funding to HO-chunk nation to carry out its program to maintain, protect, and improve the water… 08E00738 Ho-Chunk Nation Of Wisconsin $55,000
This action provides funding in the amount of $168,775 to mississippi department of environmental quality. The… 06D19225 Department Of Environmental Quality Mississippi $168,775
This agreement provides funding in the amount of $168,775 to kentucky's energy and environment cabinet to carry out its… 06D03125 Energy & Environment Cabinet $168,775

Latest 10 of 3,557 listed here. See the rest on GovTribe.

Top recipients by federal obligations

10 of 289 recipients listed here. See the rest on GovTribe.

Federal obligations by fiscal year

Fiscal year Federal obligations
FY2026 $26,121,092
FY2025 $54,570,414
FY2024 $66,140,074
FY2023 $71,162,444
FY2022 $68,899,237
FY2021 $71,143,218
FY2020 $74,925,440
FY2019 $70,608,820
FY2018 $69,515,271
FY2017 $65,811,903
FY2016 $70,951,998
FY2015 $68,618,949
FY2014 $68,378,873
FY2013 $65,024,502
FY2012 $90,738,056
FY2011 $82,676,104
FY2010 $83,601,914
FY2009 $80,237,154
FY2008 $85,007,505
FY2007 $69,627,807
FY2006 $76,686,033
FY2005 $73,613,932
FY2004 $67,345,485
FY2003 $75,322,357
FY2002 $86,402,470
FY2001 $86,024,840
Show all 26

Quick answers

What is Assistance Listing 66.419?

Assistance Listing 66.419 is Water Pollution Control State, Interstate, and Tribal Program Support, a federal grant program run by Environmental Protection Agency.

What is the CFDA number for Water Pollution Control State, Interstate, and Tribal Program Support?

Its CFDA number is 66.419: Assistance Listing numbers were called CFDA numbers before 2018.

How much funding has Assistance Listing 66.419 awarded?

3,557 grant awards under 66.419 have obligated $1,867,978,682 in federal funds to 289 recipients.

Who receives the most funding from 66.419?

The recipients obligated the most under Water Pollution Control State, Interstate, and Tribal Program Support are State Of California Water Resources Control Board ($195,274,071), North Carolina Department Of Environmental Quality ($134,984,521) and Pennsylvania Department Of Environmental Protection ($104,971,613).

How much did 66.419 obligate in fiscal year 2025?

Grants under 66.419 obligated $54,570,414 in federal funds in fiscal year 2025.

On GovTribe

See this program's full record

  • Every grant award and opportunity under it
  • Funding by recipient, agency and assistance type
  • Alerts for new opportunities
  • Ask GovTribe AI about this program