Water Desalination Research and Development

Active

Assistance listing
15.506
Agency
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

Opportunity Status Posted Applications due
Desalination and Water Purification Research Program: Research Projects R26AS00052 Closed
Desalination and Water Purification Research Program: Research Projects FY25 R24AS00421 Closed
FY24 Desalination and Water Purification Research Program: Research Projects R24AS00016 Closed
Desalination and Water Purification Research Program Pitch to Pilot FY 23 R23AS00282 Closed
Desalination and Water Purification Research Program: Research Projects R23AS00390 Closed
Desalination and Water Purification Research Program Pitch to Pilot for Fiscal Year 2022 R22AS00316 Closed
Desalination and Water Purification Research Program for Fiscal Year(FY) 22 R22AS00010 Closed
Desalination and Water Purification Research Program: Research Projects for Fiscal Years 2020 and 2021 BOR-DO-20-F004 Closed
Desalination and Water Purification Research Program for Fiscal Year 2019 BOR-DO-19-F001 Closed
Desalination and Water Purification Research Program for Fiscal Year 2018 BOR-DO-18-F002 Closed
Rio Chama Pilot Project BOR-UC-17-N017 Closed
Desalination and Water Purification Research (DWPR) Program Fiscal Year 2017 Pilot Scale Testing Projects BOR-DO-17-F006 Closed
Desalination and Water Purification Research Program Fiscal Year 2017 Full Scale Testing Projects BOR-DO-17-F007 Closed
Desalination and Water Purification Research and Development (DWPR) Fiscal Year 2016 Pilot Projects R16-FOA-DO-010 Closed
Desalination and Water Purification Research and Development (DWPR) Fiscal Year 2016 Research R16-FOA-DO-009 Closed
Reverse Osmosis Concentrate Management through Halophyte Farming R16-NOI-DO-006 Closed
Reverse Osmosis Concentrate Management through Halophyte Farming R16-NOA-DO-006 Closed
Notice of Intent to Award - Center for the Development and Use of Alternative Water Supplies R16-NOI-DO-005 Closed
Desalination and Water Purification Research and Development (DWPR) Pilot R15AS00021 Closed
Desalination and Water Purification Research and Development (DWPR) R15AS00019 Closed
Desalination and Water Purification Research and Development (DWPR) Pre-proposal Solicitation R13SF80004 Closed
Pre-proposal Solicitation for Desalination and Water Purification Research and Development (DWPR) R11SF80382 Closed
Show all 22

Grant awards

Award Recipient Federal obligations Awarded
Whether IT is implemented as direct or indirect potable reuse, recycling water alters the water chemistry compared to… R24AC00500 The Regents Of The University Of Colorado $175,000
Field-effect transistor nanosensors for testing per- and polyfluoroalkyl substances impacted water and air R24AC00510 New Jersey Institute Of Technology $250,000
The escalating global demand for freshwater, driven by diverse applications, places increasing stress on finite water… R24AC00497 Arizona State University $209,708
This project seeks to address two seemingly disparate problemsbrine management and greenhouse gas emissions from cement… R24AC00498 New Mexico State University $250,000
Coagulation and flocculation processes are commonly employed for water and wastewater treatment across the united… R24AC00493 New Jersey Institute Of Technology $249,940
This project proposes extended field testing of a high recovery batch reverse osmosis process (batch reverse osmosis)… R24AC00509 Harmony Desalination Corporation $366,778
Reverse osmosis based treatment of brackish water and treated wastewater is one of the key solutions for solving the… R24AC00496 Texas State University $250,000
This project aims to identify and gather detailed information about U.S. Municipal desalination facilities that have… R24AC00505 Mickley & Associates LLC $117,700
The proposed project aims to improve the performance of electrodialysis (ED) technologies in desalination applications… R23AC00442 William Marsh Rice University $250,000
The applicant of this project is haizhou LIU, PH.D., department of chemical and environmental engineering, university… R23AC00433 The Regents Of The University Of California $250,000

Latest 10 of 245 listed here. See the rest on GovTribe.

Top recipients by federal obligations

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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