State and Tribal Indoor Radon Grants
Active
- Assistance listing
- 66.032
- Grant awards
- 866 $175,182,775 in federal obligations
Program facts
- Also known as
- SIRG
- 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 funds state and tribal radon testing, mitigation, and radon-resistant new construction programs through the State and Tribal Indoor Radon Grants program (CFDA 66.032), with the most recent award disbursed on October 1, 2025.
The program has maintained steady activity since 1995, with 15 awards in 2025, 13 in 2024, 20 in 2023, 16 in 2022, and 18 in 2021. Over 866 awards totaling $175.2 million in federal dollars have been obligated; when combined with non-federal cost-share, total obligations reach $311.3 million. Awarded grants are predominantly Formula Grants (65% of awards) with smaller shares of Project Grants (35%) and Cooperative Agreements (1%).
EPA dominates funding, accounting for 745 of the 866 awards and $126.8 million federal dollars obligated. Regional EPA offices contribute additional awards: EPA Region 5 (16 awards, $12.3 million), EPA Region 4 (12 awards, $11.1 million), EPA Region 1 (38 awards, $5.9 million), and EPA Region 7 (9 awards, $4.7 million). Eleven distinct funding agencies active under the program account for 95% of recent awards and 92% of federal dollars.
Recent awards span state and tribal recipients and fund concrete activities: radon testing and mitigation in homes and schools, distribution of test kits to residents, training and certification of radon professionals, outreach and education campaigns, and promotion of radon-resistant building code adoption. Illinois Emergency Management Agency received $2.79 million to distribute test kits and manage a radon hotline through partnerships with the American Lung Association and county health departments. Minnesota Department of Health received $3.8 million for outreach, contractor partnerships, and radon education in schools and daycares. Pennsylvania Department of Environmental Protection received $2.12 million to support radon programs including educational research at colleges. Typical state awards fall in the range of $128 thousand to $2.79 million.
Applicants are states and federally recognized Tribes eligible to provide the required 25% cost-share in the first year of participation and 40% in subsequent years. Applications are non-competitive and evaluated at the EPA Regional level based on administrative review, prior performance, proposed outcomes alignment with EPA radon goals, and formula-based discretion. EPA Regional radon coordinators provide application assistance. Contact EPA headquarters or regional offices for application deadlines and program details at https://www.epa.gov/radon/state-and-tribal-indoor-radon-grants-sirg-program-and-resources.
Objective and description
- Objective
The EPA assists states and federally recognized Tribes to provide radon risk reduction through activities that will result in increased radon testing, mitigation, and radon resistant new construction through the authorizing statute: Title III of the
- Description
State and tribal radon programs are critical to the Agency's national goal of minimizing and preventing radon-related lung cancer. States and Tribes receive grant funds from the EPA that help finance their radon risk reduction programs. For more than 30 years, the EPA has supported state and tribal efforts to advance radon protection and risk reduction through the State and Tribal Indoor Radon Grant (SIRG) program.
Eligibility
- Applicant eligibility
Eligible entities include states (including District of Columbia (DC)), Puerto Rico, the Virgin Islands, Guam, American Samoa, the Northern Mariana Islands, federally recognized Indian Tribes and Tribal consortia, or any other U.S. Territory or possession.
- Uses of assistance
The following activities are eligible for funding under SIRG: radon surveys, public information and educational materials, radon control programs, purchase of radon measurement equipment or devices, purchase and maintenance of analytic equipment, training, program overhead and administration, data storage and management, mitigation demonstrations, Community development, consumer protection, housing, training, and toll-free hotlines. Funding for these eligible activities may be used to develop State radon response programs. States may, at the Governor's direction, aid local governments for public information and educational materials, radon control programs and training.
- Use restrictions
The statute, IRAA Section 306(i), places the following restrictions on the use of these funds: 1) SIRG recipients must perform satisfactorily in the preceding budget period to be eligible to receive additional funding; 2) State expenditures for measurement equipment/devices and mitigation demonstrations cannot exceed 50 percent of the grant amount in a budget period; 3) State expenditures for general overhead and program administration cannot exceed 25 percent in a budget period; and 4) SIRG applicants may use grant funds for financial assistance to persons only to the extent that such assistance is related to approved demonstration projects or the purchase and analysis of radon measurement devices. This program makes Federal awards on a discretionary basis. A discretionary award means an award in which the Federal awarding agency, in keeping with specific statutory authority that enables the agency to exercise judgement ("discretion"), selects the recipient and/or the amount of Federal funding awarded through a competitive process or based on merit of proposals. A discretionary award may be selected on a non-competitive basis, as appropriate. For further information, please contact the Headquarters or regional office.
- Length and time phasing of assistance
Awards funded under TSCA Section 306 (IRAA), are normally for a period of 12-36 months. The EPA encourages 36-month (3-year) SIRG project periods. The EPA negotiates project periods appropriate to a suite of projects or specific project. However, the EPA project periods are limited to a maximum of five years. Grants and cooperative agreements may be fully funded or incrementally (partially) funded, conditional on the availability of funds. Method of awarding/releasing assistance: Assistance agreements are generally funded incrementally, depending on the availability of funds. This may vary by region and grants management office.
How to apply
- Preapplication coordination
Application assistance is available through Regional radon coordinators and their Regional grants specialist counterparts. For additional state specific information on the state radon programs and a list of the EPA Regional and State Contacts visit Data and Information About Regional, State and Tribal Radon Programs.
- Application procedure
Issuing office will provide location of application procedure details as appropriate.
- Criteria for selecting proposals
The EPA will base its review of SIRG applications on whether they reflect program goals and promote integrity through a state's use of grant funds. Pursuant to TSCA Section 306(e), if state applications exceed the funds appropriated for award in a fiscal year, the EPA will prioritize state activities based on the following criteria: (1) the seriousness and extent of the radon contamination problem to be addressed; (2) the potential for the activity or project to bring about reduction in radon levels; (3) the potential for the development of innovative radon assessment techniques, mitigation measures as approved by the Administrator, or program management approaches which may be of use to other States; (4) the potential for the activity to implement the EPA's model radon-resistant building standards; (5) the potential for the development of radon programs in high-risk areas; and (6) the potential for the activity to improve the effectiveness and viability of the State program. The EPA may establish additional criteria related to demonstration activities or other aspects of the SIRG program.
- Award procedure
Each state or tribal SIRG application is subjected to an administrative and prior period performance evaluation to determine the recipient's eligibility to receive continued funding. An applicant's proposed projects and work plan are evaluated for projected results and alignment with the Agency's radon program goals and priorities. SIRG award decisions are non-competitive and made at the EPA Regional level, based on a formula moderated by Regional management discretion utilizing prior performance and results. A state or Tribe able to provide the required 25% in matching funds (first year of participation only) and 40% in matching funds (every subsequent year) is eligible to apply to the Regional EPA office for a grant.
- Deadlines
Contact the headquarters or regional location, as appropriate, for application deadlines. For program information, visit: https://www.epa.gov/radon/state-and-tribal-indoor-radon-grants-sirg-program-and-resources
- Time to approval or disapproval
Approximately 90 days.
- Renewals
Renewals of awards will be conducted in accordance with the provisions of TSCA Section 306 and the SIRG Program Handbook available State and Tribal Indoor Radon Grants (SIRG) Program Resources.
- 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
Latest 10 of 866 listed here. See the rest on GovTribe.
Top recipients by federal obligations
| Rank | Recipient | Federal obligations | Share |
|---|---|---|---|
| 1 | Minnesota Department Of Health | $8,578,330 | 5% |
| 2 | Pennsylvania Department Of Environmental Protection | $8,221,811 | 5% |
| 3 | Illinois Emergency Management Agency And Office Of Homeland Security | $7,707,176 | 4% |
| 4 | Michigan Department Of Environment, Great Lakes, And Energy | $5,552,838 | 3% |
| 5 | Ohio Department Of Health | $5,441,215 | 3% |
| 6 | NYS Department Of Health | $5,436,985 | 3% |
| 7 | Health Services Kentucky Cabinet For | $5,281,924 | 3% |
| 8 | Department Of Environment & Conservation Tennessee | $4,306,627 | 2% |
| 9 | State Of Wisconsin Department Of Health Services | $3,947,079 | 2% |
| 10 | Department Of Public Health Connecticut | $3,781,174 | 2% |
10 of 75 recipients listed here. See the rest on GovTribe.
Federal obligations by fiscal year
| Fiscal year | Federal obligations |
|---|---|
| FY2026 | $1,441,882 |
| FY2025 | $6,473,690 |
| FY2024 | $8,334,797 |
| FY2023 | $6,744,548 |
| FY2022 | $8,556,582 |
| FY2021 | $6,465,748 |
| FY2020 | $6,174,943 |
| FY2019 | $6,130,283 |
| FY2018 | $6,676,056 |
| FY2017 | $6,388,936 |
| FY2016 | $6,986,262 |
| FY2015 | $6,991,282 |
| FY2014 | $7,493,233 |
| FY2013 | $5,964,685 |
| FY2012 | $7,795,093 |
| FY2011 | $6,863,506 |
| FY2010 | $7,435,820 |
| FY2009 | $7,113,873 |
| FY2008 | $8,777,368 |
| FY2007 | $6,617,182 |
| FY2006 | $7,494,120 |
| FY2005 | $7,001,396 |
| FY2004 | $6,674,212 |
| FY2003 | $7,758,962 |
| FY2002 | $6,545,697 |
| FY2001 | $6,386,840 |
Show all 26
Quick answers
What is Assistance Listing 66.032?
Assistance Listing 66.032 is State and Tribal Indoor Radon Grants, a federal grant program run by Environmental Protection Agency.
What is the CFDA number for State and Tribal Indoor Radon Grants?
Its CFDA number is 66.032: Assistance Listing numbers were called CFDA numbers before 2018.
How much funding has Assistance Listing 66.032 awarded?
866 grant awards under 66.032 have obligated $175,182,775 in federal funds to 75 recipients.
Who receives the most funding from 66.032?
The recipients obligated the most under State and Tribal Indoor Radon Grants are Minnesota Department Of Health ($8,578,330), Pennsylvania Department Of Environmental Protection ($8,221,811) and Illinois Emergency Management Agency And Office Of Homeland Security ($7,707,176).
How much did 66.032 obligate in fiscal year 2025?
Grants under 66.032 obligated $6,473,690 in federal funds in fiscal year 2025.
On GovTribe
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