CWSRF funds water quality and wastewater treatment projects as well as storm water projects, including "green" projects. Principal forgiveness for qualifying small/disadvantaged/rural communities. The CWSRF program is a federal-state partnership that provides low-cost financing to communities for a wide range of water quality infrastructure projects, including municipal wastewater facilities, nonpoint source pollution control, decentralized wastewater treatment systems, stormwater runoff mitigation, green infrastructure, estuary protection, and water reuse. CWSRF provides low-interest, infrastructure loans to cities, counties, utility districts, and stormwater authorities.