Clean Watersheds Needs Survey

EPA’s Clean Watersheds Needs Survey (CWNS) is an assessment of capital investment needed nationwide for publicly-owned wastewater collection and treatment facilities to meet the water quality goals of the Clean Water Act. These capital investment needs are reported periodically to Congress. The information collected by the CWNS is used strictly to generate a Report to Congress quantifying the nation’s total wastewater infrastructure needs. The information collected is not intended for compliance or regulatory purposes.