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"604(b) Water Quality Grant Program" is currently closed and not accepting applications.
604(b) Water Quality Grant Program is sponsored by Arizona Department of Environmental Quality (ADEQ). This program provides funding for regional water quality management planning activities to regional planning organizations, with the goal of improving surface water quality in Arizona.
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Revised On: Jun. 19th, 2026 - 10:43 am The 604(b) Water Quality Grant Program provides funding for regional water quality management planning activities to regional planning organizations. Proposed projects must focus on planning efforts, not implementation.
**Program Goal: Improve surface water quality in Arizona** If the activities at your site or facility discharges pollutants to a protected Arizona surface water, you must have The 604(b) funds are for water quality management planning activities, such as: * improving stormwater systems, * determining ways to expand green infrastructure programs, * determining the nature, extent and causes of point and nonpoint source water pollution problems, and developing plans to resolve these problems * other water quality management planning projects Download the Fiscal Year 2027 (FY27) application form, complete it, and then send it to the email address indicated on the form | View Application > We are accepting applications through August 31, 2026 Over the past five years, ADEQ has awarded approximately $500,000 through the 604(b) grant program.
Grant funds are provided as reimbursements to awardees who submit documentation of project accomplishments and eligible expenses to ADEQ. Funding for this program is provided by the U.S. Environmental Protection Agency (EPA). Funds may be awarded to a single recipient or distributed among multiple recipients, depending on project scope and funding availability.
* Regional planning agencies * Counties, conservation districts ### Period of Performance All 604(b) grant funds must be expended within the EPA fiscal year in which they are awarded. The EPA fiscal year runs from Oct. 1 through Sept.
30 of the following year.
According to the current listing, eligibility includes: Regional planning agencies, councils of governments, counties, conservation districts, cities, and towns. Confirm the full requirements in the official notice before applying.
The current listing shows approximately $500,000 total awarded annually across multiple recipients. Verify award ceilings, matching requirements, and allowable costs in the official notice.
The published deadline was August 31, 2026, which has passed. Check the official notice for any future application windows before investing time in a proposal.
604(b) Water Quality Grant Program is funded by Arizona Department of Environmental Quality (ADEQ). Verify program details on the funder's official page before applying.
Start from the official opportunity page linked in this listing — it carries the sponsor's submission instructions.
On June 11, 2026, U.S. District Judge Richard Gergel ruled that the EPA's February 2025 termination of the $2.8 billion Environmental and Climate Justice Block Grant Program — created by Section 60201 of the Inflation Reduction Act — was arbitrary, capricious, and unlawful. The ruling voids the termination but does not order the EPA to resume the program, leaving the September 30, 2026 statutory deadline as the binding constraint. For the 116 grantees and the coalition of nonprofits, cities, and tribal partners that were already in award negotiations, the next 105 days will determine whether the program survives in any operational form or migrates entirely to the Court of Federal Claims as a damages action.
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