How do combined sewer overflows affect water quality in Philadelphia?

PHYSorg
Oct 16, 2026, 10:00 am228 ptsTop
In Philadelphia and many urban areas across the U.S. with sewer systems dating back to the 1800s, more frequent flooding is posing a threat not only to people and property but also to surrounding ecosystems. In these areas, stormwater and sewage drain into the same pipes, which are designed to spill into nearby…

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