The State Revolving Fund (SRF) provides Iowa communities with low-cost funds to invest in infrastructure that delivers safe drinking water and keeps waterways clean. 

The Clean Water Loan Program funds wastewater treatment, sewer rehabilitation, and stormwater quality improvements, as well as non-point source projects. The Drinking Water Loan Program funds water treatment plants or improvements to existing facilities, water line extensions to existing unserved properties, water storage facilities, wells, and source water protection efforts. Iowa SRF also offers a variety of Nonpoint Source Water Quality Programs to provide financing to both landowners and communities to address nonpoint source pollutants. 

The Iowa Department of Natural Resources (DNR) and the Iowa Finance Authority (IFA) jointly administer the SRF. DNR administers the environmental and permitting aspects to get projects ready for financing. This includes engineering and design approval and issuing construction permits. DNR staff also assist applicants through the environmental review process. IFA manages the financing side of the programs, including issuing bonds, managing funds, and all matters related to the loans – approvals, disbursements, and servicing.