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Review of the New York City Watershed Protection Program

Completed

Since 1997, New York City has implemented a comprehensive watershed protection program to protect the upstate watershed that supplies 1.1 billion gallons of drinking water a day to over 9 million people in the City and surrounding suburbs. The overall program includes numerous individual programs that target potential sources of contamination. The watershed protection program has allowed the City to avoid filtering its Catskill/Delaware supply, which provides about 90% of the daily water supply. The NASEM will provide advice on the program, which has evolved to respond to changing conditions, regulatory requirements, and emerging risks to the water supply.

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