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Clean Watersheds Needs Survey (CWNS) Reports to Congress

Published by U.S. EPA Office of Water (OW) - Office of Wastewater Management (OWM) | U.S. Environmental Protection Agency | Metadata Last Checked: July 31, 2025 | Last Modified: 2010-10-01
America's capital investment needs are reported periodically to Congress. The information collected by the Clean Watersheds Needs Survey (CWNS) is used strictly to generate a Report to Congress quantifying the nation’s total wastewater infrastructure needs and not for compliance or regulatory purposes.

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