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Summary
DescriptionCSO map EPA 2008.jpg
English: Map of United States indicating cities and towns with combined sewer systems. "Combined sewer systems serve roughly 772 communities containing about 40 million people."
== {{int:filedesc}} == {{Information |Description={{en|Map of United States indicating cities and towns with {{w|combined sewer}} systems. "Combined sewer systems serve roughly 772 communities containing about 40 million people."}} |Source=U.S. Environ...