Suffolk County, NY drinking water systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

• Amagansett1 system
• Amityville1 system
• Aquebogue1 system
• Asharoken1 system
• Babylon1 system
• Baiting Hollow1 system
• Bayport1 system
• Bay Shore1 system
• Baywood1 system
• Belle Terre1 system
• Bellport1 system
• Blue Point1 system
• Bohemia1 system
• Brentwood1 system
• Bridgehampton1 system
• Brightwaters1 system
• Brookhaven1 system
• Calverton3 systems
• Centereach1 system
• Center Moriches1 system
• Centerport2 systems
• Central Islip1 system
• Cold Spring Harbor2 systems
• Commack3 systems
• Copiague1 system
• Coram1 system
• Cutchogue1 system
• Deer Park1 system
• Dering Harbor1 system
• Dix Hills2 systems
• East Hampton1 system
• East Hampton North1 system
• East Islip1 system
• East Marion1 system
• East Moriches1 system
• East Northport2 systems
• East Patchogue1 system
• Eastport1 system
• East Quogue1 system
• East Setauket1 system
• East Shoreham1 system
• Eatons Neck1 system
• Elwood1 system
• Farmingville1 system
• Fire Island2 systems
• Flanders1 system
• Fort Salonga1 system
• Gilgo1 system
• Gordon Heights1 system
• Great River1 system
• Greenlawn1 system
• Greenport1 system
• Greenport West2 systems
• Halesite1 system
• Hampton Bays1 system
• Hauppauge1 system
• Head of the Harbor2 systems
• Holbrook1 system
• Holtsville1 system
• Huntington2 systems
• Huntington Bay1 system
• Huntington Station2 systems
• Islandia1 system
• Islip1 system
• Islip Terrace1 system
• Jamesport1 system
• Kings Park2 systems
• Lake Grove1 system
• Lake Ronkonkoma1 system
• Laurel1 system
• Lindenhurst1 system
• Lloyd Harbor1 system
• Manorville2 systems
• Mastic1 system
• Mastic Beach1 system
• Mattituck1 system
• Medford1 system
• Melville2 systems
• Middle Island1 system
• Miller Place1 system
• Montauk1 system
• Moriches1 system
• Mount Sinai1 system
• Napeague1 system
• Nesconset1 system
• New Suffolk1 system
• Nissequogue1 system
• North Amityville1 system
• North Babylon1 system
• North Bay Shore1 system
• North Bellport1 system
• North Great River1 system
• North Haven1 system
• North Lindenhurst1 system
• North Patchogue1 system
• Northport1 system
• North Sea1 system
• Northville1 system
• Noyack1 system
• Oakdale1 system
• Ocean Beach1 system
• Old Field1 system
• Patchogue1 system
• Peconic1 system
• Poquott1 system
• Port Jefferson1 system
• Port Jefferson Station1 system
• Quiogue1 system
• Quogue1 system
• Remsenburg-Speonk1 system
• Ridge1 system
• Riverhead1 system
• Riverside2 systems
• Rocky Point1 system
• Ronkonkoma1 system
• Sagaponack1 system
• Sag Harbor1 system
• Sayville1 system
• Selden1 system
• Setauket1 system
• Shelter Island2 systems
• Shinnecock Hills1 system
• Shirley1 system
• Shoreham1 system
• Smithtown2 systems
• Sound Beach1 system
• Southampton1 system
• South Huntington1 system
• Southold1 system
• Springs2 systems
• St. James2 systems
• Stony Brook1 system
• Stony Brook University1 system
• Terryville1 system
• Tuckahoe1 system
• Village of the Branch1 system
• Wading River1 system
• Wainscott1 system
• Water Mill1 system
• West Babylon1 system
• West Bay Shore1 system
• Westhampton1 system
• Westhampton Beach1 system
• West Hampton Dunes1 system
• West Hills1 system
• West Islip1 system
• West Sayville1 system
• Wheatley Heights1 system
• Wyandanch1 system
• Yaphank1 system