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 laboratory and pilot-scale research on desalination and water purification technologies to reduce costs, energy consumption, and environmental barriers to treating impaired water, with CFDA 15.506, and a current open solicitation (R26AS00052) due September 29, 2026.
The program's scope centers on membrane and non-membrane treatment processes for brackish groundwater, seawater, produced water, wastewater, and other alternative water sources. Recent awards fund research on reverse osmosis membrane improvements (fouling control, scaling prevention, high-recovery configurations), membrane distillation systems powered by thermal or renewable energy, electrodialysis and capacitive deionization, PFAS removal through selective membranes and advanced oxidation, brine concentrate minimization and mineral recovery, water reuse treatment trains including pathogen removal validation, and emerging technologies such as nanobubbles for antiscaling, metal-organic frameworks for contaminant capture, and energy-neutral desalination integration. Several awards address practical implementation—municipal desalination facility surveys, real-time sensor development for pathogen monitoring, and operational optimization through machine learning and process control.
Award activity has declined sharply: 27 awards in 2021 fell to 2 awards in 2025. The assistance-type mix is predominantly Cooperative Agreements (93 percent of 245 total awards) with a small share of Project Grants (7 percent). The Department of the Interior Bureau of Reclamation is the sole funding agency for all 245 awards. Combined federal obligations total $46.7 million against combined total obligations of $98.8 million, reflecting a mandatory cost-share requirement; recipients have contributed an additional $52.1 million in non-federal matching funds. Recent awards range from $235 thousand to $2.7 million in federal obligations, with typical laboratory projects near $350–500 thousand and pilot projects in the $700 thousand to $1.5 million range. One outlier award—a potable reuse pilot testing a membrane bioreactor, reverse osmosis, and advanced oxidation train—received $2.7 million in 2022.
Representative recent awards include development of nanobubbles as a chemical-free fouling-control strategy for reverse osmosis desalination (Arizona State University, $419 thousand, August 2024), field-effect transistor nanosensors for PFAS-impacted water testing ($500 thousand, March 2025), and extended field testing of electrically conducting membranes for high-recovery batch reverse osmosis in oil and gas produced-water sites ($733 thousand, July 2024). A January 2025 award developed methods to assess toxic-metal mobilization in water reuse systems due to iron-scale corrosion ($264 thousand).
The current NOFO (R26AS00052), posted July 29, 2026 with due date September 29, 2026, invites laboratory and pilot-scale proposals from individuals, nonprofits, for-profits, state/local/tribal entities, and higher education institutions (excluding federal agencies and foreign entities). Laboratory projects target bench-scale feasibility within 24 months at up to $250 thousand; pilot projects at 1+ gallon-per-minute scale using natural water sources should complete within 36 months. The solicitation has been amended multiple times addressing eligibility, formatting, and additional information on ineligible applicants. Prior NOFOs (FY24, FY25) closed in November 2023 and November 2024 respectively.
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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