Water Desalination Research and Development
Active
- Assistance listing
- 15.506
- Agency
-
Bureau of Reclamation
Department of the Interior
- Grant awards
- 245 $46,679,480 in federal obligations
Program facts
- Assistance types
-
- Cooperative Agreement
- Project Grant
- Treasury account
-
- 14-0680-0-1-301
- More information
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 funds desalination and water purification research under Assistance Listing 15.506, with its most recent recorded award dated May 28, 2025. Awards support laboratory and pilot-scale treatment research aimed at reducing the cost, energy use, and environmental impact of treating impaired water for beneficial use. Recent activity has declined sharply, from 27 awards in 2021 to 2 in 2025. The program has 245 awards since its first on September 29, 1997, totaling $46.7 million in federal dollars obligated. Reclamation is the sole funding agency. Its awards are predominantly Cooperative Agreements (228 awards, 93%), with 17 Project Grants (7%). Combined federal and non-federal obligations total $98.8 million, and non-federal cost share is a stated evaluation factor. Continuation and award count depend on annual congressional appropriations.
Recent scope centers on membrane and electrochemical treatment for brackish water and produced water. Examples include Cooperative Agreement R24AC00509, a $733,555.62 six-month field test of active reverse osmosis membranes on oil and gas produced water in California, and R23AC00433, a $391,660.68 laboratory evaluation at the University of California, Riverside of vacuum ultraviolet treatment for nitrate and PFAS in inland desalination brine. Cooperative Agreement R24AC00500, $264,133.31, addresses toxic metal release in distribution systems from potable reuse. The largest recent award in the source is R22AC00424, $2,727,540, for a pilot potable reuse treatment train; its recipient is not named.
Solicitation R26AS00052 was posted July 29, 2026, with a due date of September 29, 2026. That date has passed, so no grant opportunity is currently open. The solicitation accepted Cooperative Agreements and Grants from a broad applicant field, including higher education, for-profit and nonprofit organizations, small businesses, and tribal governments. Laboratory-scale projects must finish within 24 months, and pilot-scale projects within 36 months and use natural water at flow rates above 1 gallon per minute. Foreign entities and federal agencies are ineligible. The prior solicitation, R24AS00421, closed November 13, 2024.
Objective and description
- Objective
Desalination and Water Purification Research (DWPR) Program aims to increase water supplies by reducing the costs, energy requirements, and other barriers to adoption of treating impaired water for beneficial uses. The DWPR Program works with Reclama
- Description
Desalination and Water Purification Research (DWPR) Program aims to increase water supplies by reducing the costs, energy requirements, and other barriers to adoption of treating impaired water for beneficial uses. The DWPR Program works with Reclamation researchers and partners to develop innovative, cost-effective, and technologically efficient ways to desalinate and treat water. DWPR funding plays a critical role in iterating an idea from the lab to a real-world demonstration, yielding products that serve the water treatment community and attract commercialization interest. Of particular interest is research that has a national significance-where the issues are of large-scale concern and the benefits accrue to a large sector of the public.
Eligibility
- Applicant eligibility
Any responsible source, to include individuals, State and local entities, public nonprofit institutions/organizations, other public institutions/organizations, Federally recognized Indian Tribal Governments, small businesses, profit organizations, private nonprofit institutions/organizations, quasi-public nonprofit institutions/organizations, and other private institutions/organizations may submit a proposal which will be considered by Reclamation. Foreign entities are not eligible for funding. Federal agencies are not eligible to apply.
- Beneficiary eligibility
Individuals, State and local entities, public nonprofit institutions/organizations, other public institutions/organizations, Federally recognized Indian Tribal Governments, small businesses, profit organizations, private nonprofit institutions/organizations, quasi-public nonprofit institutions/organizations and other private institutions/organizations.
- Uses of assistance
To be used to support research and studies, demonstration and development projects and related activities, and operation and maintenance at Brackish Groundwater National Desalination Research Facility (BGNDRF) as described in the Water Desalination Act and amendments.
- Length and time phasing of assistance
Solicitation is made for projects ranging up to 18 to 36 months duration (follow-on funding may be available for additional research studies or pilot studies through a new application). No-cost extensions to awarded agreements are provided for projects that can justify additional time beyond the initial project duration. Method of awarding/releasing assistance: Varies by award.
How to apply
- Preapplication coordination
Environmental compliance for this program may be required depending on the scope of the specific project funded. This may result in the need for an environmental impact assessment or environmental impact statement prior to the commencement of project activities. See Notices of Funding Opportunities for additional details. 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.
- Criteria for selecting proposals
Evaluation factors may include but are not limited to the following: (1) Non-Federal cost share, (2) Impact of the proposed research, (3) Project readiness, (4) Familiarity in the field of work, (5) Team qualifications, (6) Schedule/workplan and QA/QC, and (7) Presidential and Department of Interior priorities.
- Award procedure
The number of awards, maximum funding amount per award, and areas of interest for which proposals will be considered, are determined on an annual basis and are dependent upon the annual appropriation from Congress. Proposals received in response to the annual solicitation are reviewed on the basis of a competitive, merit- review process, and are rated in accordance with evaluation criteria stated in the solicitation document. Reclamation will make awards for the highest rated proposals based on the amount of funding available each year. Reclamation reserves the right to make awards to maintain balance among the program objectives listed in the solicitation document.
- Time to approval or disapproval
Contact Reclamation for the range of time when proposals are approved or disapproved.
- Renewals
Continuation of funding for the Program from one fiscal year to the next is at the discretion of the Congress. Solicitation is made for projects ranging up to 18 to 36 months duration (follow-on funding may be available for additional research studies or pilot studies through a new application). No-cost extensions to awarded agreements are provided for projects that can justify additional time beyond the initial project duration.
- Appeals
None. Final award decisions are not subject appeal; however, the Bureau of Reclamation will provide all applicants with information on why their proposals were not selected for award.
Grant opportunities
Show all 22
Grant awards
Latest 10 of 245 listed here. See the rest on GovTribe.
Top recipients by federal obligations
| Rank | Recipient | Federal obligations | Share |
|---|---|---|---|
| 1 | Trustees Of The Colorado School Of Mines | $2,223,581 | 5% |
| 2 | Massachusetts Institute Of Technology | $1,845,752 | 4% |
| 3 | New Mexico State University | $1,778,836 | 4% |
| 4 | The Regents Of The University Of Colorado | $1,545,718 | 3% |
| 5 | New Mexico Institute Of Mining And Technology | $1,271,970 | 3% |
| 6 | University Of Alabama | $1,046,581 | 2% |
| 7 | New Jersey Institute Of Technology | $1,041,142 | 2% |
| 8 | Carollo Engineers Inc. | $957,395 | 2% |
| 9 | Encina Wastewater Authority | $800,000 | 2% |
| 10 | Silicon Valley Clean Water | $799,908 | 2% |
10 of 95 recipients listed here. See the rest on GovTribe.
Federal obligations by fiscal year
| Fiscal year | Federal obligations |
|---|---|
| FY2025 | $300,460 |
| FY2024 | $3,290,339 |
| FY2023 | $1,904,140 |
| FY2022 | $6,691,611 |
| FY2021 | $7,223,151 |
| FY2020 | $5,021,550 |
| FY2019 | $2,412,218 |
| FY2018 | $3,218,831 |
| FY2017 | $459,850 |
| FY2016 | $1,998,652 |
| FY2015 | $1,502,277 |
| FY2014 | $1,495,703 |
| FY2009 | -$45,011 |
| FY2008 | $3,617,635 |
| FY2007 | $47,811 |
| FY2006 | $170,504 |
| FY2005 | $2,426,098 |
| FY2004 | $1,675,017 |
| FY2003 | $513,531 |
| FY2002 | $1,709,269 |
| FY2001 | $434,672 |
Show all 21
Quick answers
What is Assistance Listing 15.506?
Assistance Listing 15.506 is Water Desalination Research and Development, a federal grant program run by Bureau of Reclamation (Department of the Interior).
What is the CFDA number for Water Desalination Research and Development?
Its CFDA number is 15.506: Assistance Listing numbers were called CFDA numbers before 2018.
How much funding has Assistance Listing 15.506 awarded?
245 grant awards under 15.506 have obligated $46,679,480 in federal funds to 95 recipients.
Who receives the most funding from 15.506?
The recipients obligated the most under Water Desalination Research and Development are Trustees Of The Colorado School Of Mines ($2,223,581), Massachusetts Institute Of Technology ($1,845,752) and New Mexico State University ($1,778,836).
How much did 15.506 obligate in fiscal year 2025?
Grants under 15.506 obligated $300,460 in federal funds in fiscal year 2025.
Are there open grant opportunities under 15.506?
No opportunity listed under 15.506 is open now. The latest, Desalination and Water Purification Research Program: Research Projects, was posted on July 29, 2026.
On GovTribe
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