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Sewer Overflow and Stormwater Reuse Municipal Grant Program

Program Information

Popular name

Overflow Stormwater Grant Program (OSG Program)

Program Number

66.447

Sub-agency

N/A

Program 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 works to intercept, transport, control, treat, or reuse municipal combined sewer overflows (CSOs), sanitary sewer overflows (SSOs), or stormwater; and 2) any other measures to manage, reduce, treat, or recapture stormwater or subsurface drainage water. State recipients shall continue to provide funding to municipalities based on the following priorities: 1. financially distressed communities that meet the affordability criteria established by the state; 2. implementing a long-term control plan for CSOs or SSOs; 3. requesting funds for a project included on a state’s Intended Use Plan for the Clean Water State Revolving Fund; or 4. an Alaskan Native Village. State recipients may select which priorities from this list are most relevant for their program when determining which municipalities to fund. Furthermore, to the extent there are sufficient eligible project applications, at least 20% of a state’s allocation must be used for green infrastructure, water and energy efficiency improvements, or other environmentally innovative activities. To the extent there are sufficient eligible project applications, a State shall use not less than 25 percent of their allocation amount to carry out projects in rural communities or financially distressed communities. Of this 25 percent amount, at least 60 percent of this amount should go toward rural communities (Population of 10,000 or less).

Program expenditures, by FY (2023 - 2025)

This chart shows obligations for the program by fiscal year. All data for this chart was provided by the administering agency and sourced from SAM.gov, USASpending.gov, and Treasury.gov.

For more information on each of these data sources, please see the About the data page.

Additional program information

  1. 2021

    In FY21, the OSG Program was successfully launched and began making awards. Over $5.8 million went out to communities to improve their overflow and stormwater infrastructure. Is was reported that almost all of this $5.8 million will benefit disadvantaged communities.

  2. 2022

    The program continued to support stormwater projects for communities.

  3. 2024

    The program continued to support stormwater projects for communities and has funded over $157 million in grants.

Single Audit Applies (2 CFR Part 200 Subpart F):

For additional information on single audit requirements for this program, review the current Compliance Supplement.

OMB is working with the U.S. Government Accountability Office (GAO) and agency offices of inspectors general to include links to relevant oversight reports. This section will be updated once this information is made available.

Assistance agreement awards are subject to the grant regulations at 2 CFR Part 1500. On August 4, 2020, EPA published a Federal Register Notice (FRN) on the section 221 allocation formula design and its contributing data sources used to assess total needs of the state for municipal CSO controls, SSO controls, and stormwater. This notice is available at: https://www.regulations.gov/docket?D=EPA-HQ-OW-2020-0282. The OSG Program's implementation document is available at https://www.epa.gov/cwsrf/sewer-overflow-and-stormwater-reuse-municipal-grants-program

  1. Federal Water Pollution Control Act, Section 221, as amended by Public Law 115-270 section 4106, and as amended by Public Law 117-58 section 50204 33 USC 1301.

Program details

Program types

Eligible beneficiaries

  • Anyone/general public
  • State

Additional resources