The Division of Sanitation oversees, operates, maintains and upgrades 26 Suffolk County owned sewer districts, which includes over 1,250 miles of sanitary gravity sewer and force main piping, 102 sewage pumping stations and 24 wastewater treatment plants throughout the County. These systems are regulated by the New York State Department of Environmental Conservation, the Suffolk County Department of Health Services and a multitude of federal and safety organizations. The sewer plants range in size from 45,000 gallons per day up 40.5 million gallons per day. Tours are available at Districts 3 and 21 (SUNY) by 311.