Domestic Water Supply Projects
Active
- Assistance listing
- 15.577
- Agency
-
Bureau of Reclamation
Department of the Interior
- Grant awards
- 10 $41,250,497 in federal obligations
Program facts
- Assistance types
-
- Project Grant
- Cooperative Agreement
- Treasury account
-
- 14-0680-0-1-301
Program details come from SAM.gov Assistance Listings. Updated . Grant award figures come from USAspending.gov.
About this program
The Department of the Interior Bureau of Reclamation is awarding Project Grants and Cooperative Agreements to fund planning, design, and construction of water infrastructure projects serving tribal and insular area communities without reliable access to domestic water supplies, CFDA 15.577, with the most recent award disbursed on February 19, 2026.
Program activity remains strong. Ten awards totaling $41.3 million in federal dollars obligated have been made since June 2025, with nine awards in 2025 and one in early 2026. The program draws on $550 million in Inflation Reduction Act funding available through fiscal year 2031. The Bureau of Reclamation is the sole funding agency under this listing.
The program funds the planning, design, and construction of domestic water supply infrastructure, with typical projects addressing multiple infrastructure needs simultaneously. Representative recent awards reflect the scope: the Barona Band of Mission Indians received $21.9 million for construction of a potable water pipeline to import supplies from the Ramona Municipal Water District to address drought-driven groundwater depletion and high nitrate contamination; the Lummi Nation's Tribal Sewer and Water District received $3.41 million for feasibility studies, treatment plant design, and permitting to address arsenic contamination, saltwater intrusion risk, and alternative water source development; the San Carlos Apache Tribe received $6.04 million for planning and design of raw water delivery and drinking water treatment facilities serving the central portion of the reservation. Other awards fund pipeline replacement, well development, system expansion to unconnected households, and water system relocation to address flood risk.
Awards are predominantly Project Grants (90% of awards), with one Cooperative Agreement (10%). Project awards typically span 1 to 5 years depending on activity type—planning awards complete within one year, design within two years, construction within five years.
Award magnitudes range widely, from $110,978 for design and permitting in Keller, Washington to $21.9 million for construction in the Barona Band project, with planning and design awards typically in the $1 million to $6 million range.
The source does not identify any currently open grant opportunities or upcoming solicitation dates.
Objective and description
- Objective
Section 50231 of the IRA contained $550.0 million, available through FY2031, for Reclamation to provide up to 100% of the cost for the planning, design, and/or construction of water projects where the primary purpose is to provide domestic water supp
- Description
In accordance with the Inflation Reduction Act (Public Law 117-169, Section 50231) Domestic Water Supply Projects, these funds may be used for the planning, design, or construction of water projects the primary purpose of which is to provide domestic water supplies to tribal or insular area communities or households that do not have reliable access to domestic water supplies.
Eligibility
- Uses of assistance
In accordance with the Inflation Reduction Act (Public Law 117-169, Section 50231) Domestic Water Supply Projects, these funds may be used for the planning, design, or construction of water projects the primary purpose of which is to provide domestic water supplies to tribal or insular area communities or households that do not have reliable access to domestic water supplies as described above.
- Length and time phasing of assistance
Projects are generally awarded for 1 to 5 years. Proposed project should be complete within: A) Planning - 1 year from date of award; B) Design - 2 years from date of award; and C) Construction - 5 years from date of award.
How to apply
- Award procedure
90-120 days
- Time to approval or disapproval
None. Final award decisions are not subject to appeal; however, the Bureau of Reclamation will provide all applicants with information on why their proposals were not selected for award.
Grant awards
Top recipients by federal obligations
| Rank | Recipient | Federal obligations | Share |
|---|---|---|---|
| 1 | Barona Group Of The Capitan Grande Band Of Mission Indians Of The Barona Reservation | $21,934,652 | 53% |
| 2 | San Carlos Apache Tribal Council | $6,041,724 | 15% |
| 3 | Fallon Paiute Shoshone Tribe | $3,793,340 | 9% |
| 4 | Lummi Indian Business Council | $3,410,000 | 8% |
| 5 | Kalispel Indian Community Of The Kalispel Reservation | $2,282,320 | 6% |
| 6 | Makah Indian Tribe Of The Makah Indian Reservation | $1,810,606 | 4% |
| 7 | Shoshone-Paiute Tribes | $1,541,085 | 4% |
| 8 | La Jolla Band Of Luiseno Indians | $252,279 | 1% |
| 9 | Confederated Tribes Of Colville Reservation | $110,978 | <1% |
| 10 | HOH Indian Tribe | $73,513 | <1% |
Federal obligations by fiscal year
| Fiscal year | Federal obligations |
|---|---|
| FY2026 | $9,451,724 |
| FY2025 | $31,798,773 |
Quick answers
What is Assistance Listing 15.577?
Assistance Listing 15.577 is Domestic Water Supply Projects, a federal grant program run by Bureau of Reclamation (Department of the Interior).
What is the CFDA number for Domestic Water Supply Projects?
Its CFDA number is 15.577: Assistance Listing numbers were called CFDA numbers before 2018.
How much funding has Assistance Listing 15.577 awarded?
10 grant awards under 15.577 have obligated $41,250,497 in federal funds to 10 recipients.
Who receives the most funding from 15.577?
The recipients obligated the most under Domestic Water Supply Projects are Barona Group Of The Capitan Grande Band Of Mission Indians Of The Barona Reservation ($21,934,652), San Carlos Apache Tribal Council ($6,041,724) and Fallon Paiute Shoshone Tribe ($3,793,340).
How much did 15.577 obligate in fiscal year 2025?
Grants under 15.577 obligated $31,798,773 in federal funds in fiscal year 2025.
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