Sewer Overflow and Stormwater Reuse Municipal Grant Program

Active

Assistance listing
66.447
Agency
Grant awards
117 $182,412,401 in federal obligations

Program facts

Also known as
Overflow Stormwater Grant Program (OSG Program)
Assistance type
  • Formula Grant
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 Formula Grants under the Sewer Overflow and Stormwater Reuse Municipal Grant Program (CFDA 66.447) to states, the District of Columbia, and U.S. territories for planning, design, and construction of combined sewer overflow (CSO), sanitary sewer overflow (SSO), and stormwater management infrastructure projects, with the most recent award issued January 1, 2026.

The program is actively funded and has demonstrated consistent award activity. Over the past five years, the program issued 117 grants across 2022–2026, with an upward trend from 26 awards in 2022 to 35 in 2024, though 2025 and 2026 show reduced pace (16 and 1 award respectively to date). Combined federal dollars obligated total $182.4 million against $199.4 million in combined total obligated, indicating a non-federal cost-share contribution of $17 million. Funding history extends to at least June 2021.

Award activities span planning, design, and construction phases. Recent grants fund integrated stormwater management master plans, technical design documents, sanitary sewer overflow control solutions, rehabilitation and replacement of aging sewer infrastructure, lift station improvements, green infrastructure deployment, infiltration and inflow correction, and stream and wetland restoration. Eligible recipients include municipalities and municipal entities, with strong emphasis on rural and financially disadvantaged communities. Beneficiaries span both urban and rural settings nationwide.

All 117 awards in the portfolio are Formula Grants, distributed across EPA's ten regional offices. EPA Region 5 leads by federal dollars obligated ($33.3 million across 17 awards), followed by EPA Region 9 ($28.3 million, 10 awards), Region 2 ($25.7 million, 8 awards), Region 4 ($23.8 million, 14 awards), and Region 3 ($19.7 million, 15 awards). These five regions account for 72 percent of all federal dollars obligated.

Representative recent awards illustrate scope and scale. Ohio Environmental Protection Agency received $2.8 million (January 2026) to distribute subawards for CSO, SSO, and stormwater management projects. California State Water Resources Control Board received $4.3 million (September 2025) for stormwater infrastructure planning, design, and construction. Nebraska Department of Environmental Quality received $5.8 million (October 2025) for planning and design of CSO and SSO projects and stormwater management. Pennsylvania (through PennVest) received $3.1 million (October 2024) for rehabilitation and replacement of approximately 55,000 linear feet of sanitary sewer collection in the City of Franklin. Wisconsin Department of Natural Resources received $3.2 million (October 2024) for stormwater runoff projects.

No current grant opportunities are posted in the source. Application deadlines are set by the EPA Regional Administrator; applicants should contact their regional office directly.

Objective and description

Objective

The objective of the OSG Program is to award grants to the states, the District of Columbia, and U.S. territories for the purpose of providing grants to a municipality or municipal entity for the planning, design, or construction of: 1) treatment wor

Description

The OSG Program provides grants to states, the District of Columbia, and U.S. territories to assist in sewer overflow and stormwater needs. State recipients may use funding for municipal projects that plan, design, or construct combined sewer overflows (CSOs), sanitary sewer overflows (SSOs), or stormwater projects.

Eligibility

Applicant eligibility

Eligible recipients include the 50 states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands.

Beneficiary eligibility

Beneficiaries of these grants include the residents within the municipality or municipal entity that received an OSG sub-award from the state.

Uses of assistance

State entities may use funds to plan, design, or construct projects that correct combined sewer overflows, sanitary sewer overflows, stormwater needs, or subsurface drainage needs. Projects may include but are not limited to installation of separate sanitary and storm sewers; infiltration/inflow correction; stormwater collection systems; Green Infrastructure; or other capital projects the mitigate sewer overflows or stormwater concerns. 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: https://www.epa.gov/geospatial.

Length and time phasing of assistance

The terms of the assistance agreement shall be determined at the time of award.

How to apply

Preapplication coordination

This program is eligible for coverage under E.O. 12372, "Intergovernmental Review of Federal Programs." An applicant should consult the office or official designated as the single point of contact in his or her State for more information on the process the State requires to be followed in applying for assistance, if the State has selected the program for 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. 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 revi State applicants may coordinate with their EPA Regional Project Officers to review their workplan and to answer questions concerning the technical or administrative requirements of the grant prior to the application package submission on grants.gov. Informal meetings may be held as needed between the EPA regional office and the state or territorial 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".

Criteria for selecting proposals

Applications are assessed consistent with the merit review regulations in 2 CFR 200.205.

Award procedure

OSG Program funds are awarded to states, D.C., and the U.S. territories based on an allocation. Applicants can contact their EPA regional office for further information and program materials. Applications are reviewed by the appropriate EPA Regional Office and if approved, are awarded by the Region.

Deadlines

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

Appeals

Disputes will be resolved under 2 CFR 1500 Subpart E, as applicable.

Grant awards

Award Recipient Federal obligations Awarded
The agreement provides funding to support the ohio environmental protection agency's project to provide subawards to… 02E03279 The State Of Ohio Office Of Budget And Management $2,801,000
The agreement provides funding to support the minnesota pollution control agency project to provide subawards to… 02E03236 Minnesota Pollution Control Agency $297,000
The agreement provides funding to support the hawaii department of health project to provide subawards to local… 97T36601 Hawaii Department Of Health $505,000
The agreement provides funding to support cnmi for costs associated with the planning, design, and construction of… 97T35501 Office Of The Governor $252,500
The agreement provides funding to provide subawards to local municipalities in nebraska for costs associated with the… 96709103 Nebraska Department Of Water, Energy, And Environment $5,065,204
The agreement provides funding to support the maryland department of the environment's project to provide subawards… 953A0205 The Environment Maryland Department Of $1,080,000
The agreement provides funding to support the massachusetts clean water trust in coordination with mass DEP on… 25000525 Massachusetts Clean Water Trust $587,000
The agreement provides funding to support the michigan department of environment, great lakes, and energy (egle)… 02E03235 Michigan Department Of Environment, Great Lakes, And Energy $605,000
The action approves funding in the amount of $902,714 to the kentucky energy and environment cabinet to support the… 02D68724 Energy & Environment Cabinet $902,714
This action approves an award in the amount of $666,714 to the tennessee department of environment and conservation… 02D65324 Department Of Environment & Conservation Tennessee $666,714

Latest 10 of 117 listed here. See the rest on GovTribe.

Top recipients by federal obligations

10 of 47 recipients listed here. See the rest on GovTribe.

Federal obligations by fiscal year

Fiscal year Federal obligations
FY2025 $32,253,947
FY2024 $51,956,255
FY2023 $47,968,999
FY2022 $43,751,200
FY2021 $5,882,000

Quick answers

What is Assistance Listing 66.447?

Assistance Listing 66.447 is Sewer Overflow and Stormwater Reuse Municipal Grant Program, a federal grant program run by Environmental Protection Agency.

What is the CFDA number for Sewer Overflow and Stormwater Reuse Municipal Grant Program?

Its CFDA number is 66.447: Assistance Listing numbers were called CFDA numbers before 2018.

How much funding has Assistance Listing 66.447 awarded?

117 grant awards under 66.447 have obligated $182,412,401 in federal funds to 47 recipients.

Who receives the most funding from 66.447?

The recipients obligated the most under Sewer Overflow and Stormwater Reuse Municipal Grant Program are State Of California Water Resources Control Board ($21,264,000), The State Of Ohio Office Of Budget And Management ($13,851,000) and Nebraska Department Of Water, Energy, And Environment ($13,434,204).

How much did 66.447 obligate in fiscal year 2025?

Grants under 66.447 obligated $32,253,947 in federal funds in fiscal year 2025.

On GovTribe

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