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River was reported to be unfit for bathing, drinking and cooking because of too much sediment.
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The Potomac river was already polluted according to National Geographic. It was thought that dilution was the solution at the time.
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Survey indicates 84 species of fish in the river
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Sewage from D.C. population of 340,000 was emptyed into the river.
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Bacterial contamination from the waste of 575,000 people of the metro area that was dumped into the river, forced the river to close for swimming.
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Pennsylvania passes the nations first law limiting acid mine drainage into the streams that emptyed into the river.
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States recognized the need to clean up the Potomac and water treatment plants were built. Organizations were monitoring river pollutions on a regular basis through testing. Lots of legislations (clean water Acts) created.
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The Washington Post calls the river an "open sewer."
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Waste from partially treated sewer has doubled sice 1932 in the Potomac
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There was a noticeable lack of blue/green algae mats that had covered the upper estuary a decade earlier.
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A survey found 78 species of fish in teh metro Washington Potomac, Virginia initiated a phosphate ban, and DC issued fishing licenses.
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Oil pipeline ruptured and spilled over 400,000 gallons of diesel fuel into a northern tributary of the Potomac.
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The Chesapeake 2000 Agreement is signed and ICPRB turns 60 years old.
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70 percent of Northern Virginia voters were willing to pay
more to clean up the Potomac River and the Chesapeake Bay.