Clean Water State Revolving Fund Loans

The CWSRF is a low-interest loan program to assist communities with wastewater and pollution control projects such as municipal wastewater or green infrastructure, Non-Point Source implementation, flood mitigation, stormwater infrastructure projects eligible under the Clean Water Act, or the refinance of existing debt for these purposes. The program is funded by EPA capitalization grants, state matching funds, loan repayments, investment earnings, and bonds.

SFY 2027 CWSRF Loan Forgiveness Webinar

2026 Intended Use Plan Presentation

To benefit a municipality that meets the state's affordability criteria
To benefit a municipality that does not meet the state's affordability criteria but will benefit individual ratepayers
25% of eligible project costs up to $1,000,000
75% cost share requirement
Documentation required for collaborative funding
If a Consent Order or Notice of Violation has been issued by ODEQ on the wastewater system, loan forgiveness must be used to address tasks outlined in the CO or NOV
Entities may only receive one award per fiscal year
Funding allocation will be based on a first come first serve basis centered on the readiness to proceed section in the ranking criteria
No deadline for applying for loan forgiveness
Non-point source projects are eligible for 25% of the project cost up to $1,000,000 and for all tiers

Counties, towns and municipalities
Public works authorities
School districts
Districts formed under Title 82 of the State's statutes as follows:
- Water conservancy districts
- Rural sewage districts
- Irrigation districts

Secondary and advanced treatment
Inflow and infiltration correction
Sewer replacement and rehabilitation
New collector and interceptor sewers
Nonpoint source implementation
Land acquisitions necessary for treatment
Decentralized wastewater systems
Facility security systems
Urban brownfield projects
Stormwater projects
Green infrastructure projects
Energy efficiency projects for publicly owned treatment works (POTW)
Water efficiency and reuse projects
Automated meter readers to reduce demand on POTW
Environmentally innovative projects
Habitat protection and restoration practices
Planning/assessment and monitoring practices
Dam rehabilitation

For more information, see the EPA's Overview of CWSRF Eligibilities.

Complete the CWSRF Project Priority List Request Form
Complete the relevant application:
Prepare supporting documentation:
- Engineering Report following the format adopted by the Funding Agency Coordinating Team (FACT) and any planning or specification documents
- Weighted Loan Term Worksheet for General CWSRF Projects or for Stormwater/Green Projects
- Environmental Information Document (EID) Checklist
- Request for Environmental Categorical Exclusion
Select bond counsel
Submit the application and supporting documentation to the Financial Assistance Division at FAD@owrb.ok.gov

Loan recipients must comply with cross-cutting federal authorities. Please contact us at (405) 530-8800 for more information or review our Frequently Asked Questions.

Projects are ranked and listed on a funding Project Priority List. Additional points may be earned based on factors such as the following:

Water Quality Impacts: Points will be awarded if the project is protecting or improving a waterbody.
Programmatic Priority Factor: Points will be awarded for affordability criteria, conservation and enforcement/compliance as defined in the state's current IUP.
Readiness to Proceed Factor: Points will be awarded depending on the documents submitted showing the “readiness to proceed”.

Below market interest rate approximately 60% of AAA market rate with 40% savings through interest subsidy
0.50% administration fee
Up to 30 year term determined by the useful life of project components
1.25x debt coverage ratio requirement
No cash reserve requirement
Construction draw note with no interest charged on unused loan portion

The CWSRF requires the development of affordability criteria to assist in community ranking across Oklahoma. The EPA requires affordability criteria to include income and employment data, population trends, and any other data determined relevant by the State.

Tiered System for Oklahoma’s CWSRF Affordability Criteria

Community Affordability Calculation

Green Project Reserve & Additional Subsidy