There are approximately 770 combined sewer systems serving 40 million people in the United States. Most are concentrated in the Northeast, Great Lakes, and Pacific Northwest.
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April 26, 2009 at 10:17 pm · Filed under Factoids
There are approximately 770 combined sewer systems serving 40 million people in the United States. Most are concentrated in the Northeast, Great Lakes, and Pacific Northwest.
Source:
Published Work: Water by the Barrel, Canadian Water Treatment Magazine, May/June 2009
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