New York City’s Wastewater
New York City’s 14 wastewater treatment plants together treat 1.3 billion gallons of wastewater daily. Our system combines sanitary flow, created each time a New Yorker turns on a tap, runs a washing machine or flushes a toilet, and runoff that enters our sewers whenever it rains or snows. This complex system quietly does a job we simply can’t live without. This section provides an in-depth look at New York City's wastewater treatment process. Topics include the testing of New York City waterways, pollution control programs, beneficial use of biosolids, and how you can make a difference.