Regulations
- MS4: OK DEQ MS4 Program
- Construction Stormwater: OK DEQ Construction Stormwater
- Industrial Stormwater: OK DEQ Industrial Stormwater
Funding Resources
Clean Water State Revolving Fund
For: Planning, design, and construction of wastewater and water quality projects Administered By: Oklahoma Water Resources Board
Eligibility: Cities, towns, counties, and public trusts
Funding Type: Loans
Max Funding Level: Loan forgiveness up to $1,000,000
Rural Infrastructure Grant (RIG)
For: Emergency repairs, system improvements, and water/wastewater infrastructure
Administered By: Oklahoma Rural Water Association
Eligibility: Rural water and sewer districts, and small municipalities
Funding Type: Grants
Max Funding Level: $100,000
Rural Economic Action Plan (REAP)
For: Water and wastewater infrastructure, as well as rural community development
Administered By: Oklahoma Water Resources Board
Eligibility: Municipalities and entities with a population of 7,000 or less
Funding Type: Grants
Max Funding Level: $150,000
Financial Assistance Program Loans
For: Long-term financing for water and wastewater infrastructure projects
Administered By: Oklahoma Water Resources Board
Eligibility: Cities, towns, counties, and public trusts
Funding Type: Loans
Max Funding Level: None Stated
Community Development Block Grant (CDBG) Programs
For: Public facilities, economic development, and revitalization in low-to-moderate income areas
Administered By: Oklahoma Commerce
Eligibility: Local governments (cities and counties)
Funding Type: Grants
Max Funding Level: Depends on which program you apply for
Affiliate Grant Opportunities
For: Community beautification, recycling, and litter prevention projects
Administered By: Keep Oklahoma Beautiful
Eligibility: KOB Certified Affiliates
Funding Type: Grants
Max Funding Level: $6,000
Kirkpatrick Foundation Grants
Kirkpatrick Foundation Grants
For: Animal wellbeing, environmental conservation, and arts/culture
Administered By: Kirkpatrick Foundation
Eligibility: 501(c)(3) non-profit organizations
Funding Type: Grants
Max Funding Level: Grants are normally no larger than 10 percent of an organization’s current fiscal year budget
ReNEW Cost-Share Program
For: Wetland restoration, creation, and enhancement on private property, including sediment removal, restoring wetland hydrology, water-control structures, cattle-exclusion fencing, native-grass buffers, and brush management.
Administered By: Oklahoma Conservation Commission, Oklahoma Wetlands Program
Eligibility: Oklahoma landowners interested in restoring, creating, or enhancing wetlands. Applications may be submitted through a local conservation district or directly to the Oklahoma Conservation Commission.
Funding Type: Cost-share and technical assistance
Max Funding Level: Up to 80% of total restoration costs, capped at $35,000 per project. The 2026 application period is closed, so it should be listed as a future-cycle opportunity rather than currently open.
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Emergency Grants
For: Urgent water- and wastewater-system repairs or replacement projects responding to unforeseen, life-, health-, or property-threatening emergencies. Eligible work includes water-supply reservoirs, storage tanks, water treatment and distribution systems, wastewater collection systems, and wastewater treatment systems.
Administered By: Oklahoma Water Resources Board
Eligibility: Oklahoma counties, towns, municipalities, public-works authorities, school districts, water conservancy districts, rural water or sewer districts, and irrigation districts. The emergency must not reasonably have been avoidable and the applicant must be unable to reasonably finance the project without OWRB assistance.
Funding Type: Grants
Max Funding Level: Up to $100,000 per project per applicant per fiscal year, with a required 15% local match. Applicants begin by emailing the OWRB Financial Assistance Division to determine whether the emergency is eligible, then submit required financial, engineering, organizational, and authorizing documentation.
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