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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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Summary
| Description |
English: 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. |
| Date | |
| Source | U.S. Environmental Protection Agency (EPA), "Primer for Municipal Wastewater Treatment Systems." EPA 832-R-04-001. p. 6. |
| Author | U.S. Environmental Protection Agency, Washington, D.C. |
Licensing
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This image (or other media) is a work of an Environmental Protection Agency employee, taken or made as part of that person's official duties. As works of the U.S. federal government, all EPA images are in the public domain.
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File history
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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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