File:US Wastewater Treatment Levels Before & After CWA.png

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US_Wastewater_Treatment_Levels_Before_&_After_CWA.png ‎(425 × 404 pixels, file size: 18 KB, MIME type: image/png)

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	05:01, 2 May 2020		425 × 404 (18 KB)	Moreau1	{{Information \|Description={{en\|1=Caption: "Population Receiving Different Levels of Wastewater Treatment." Graph showing levels of municipal sewage treatment in the United States, before and after passage of the 1972 Clean Water Act (CWA). Data based on the 2000 EPA Clean Watershed Needs Survey.}} \|Source=U.S. Environmental Protection Agency (EPA), [https://www.epa.gov/npdes/npdes-resources "Primer for Municipal Wastewater Treatment Systems."] EPA 832-R-04-001. p. 6. \|Date=September 2004 \|Au...

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