Nassau 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 these systems. 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.

• Albertson1 system
• Baldwin1 system
• Baxter Estates1 system
• Bay Park1 system
• Bayville1 system
• Bellerose1 system
• Bellerose Terrace1 system
• Bellmore1 system
• Bethpage1 system
• Brookville1 system
• Carle Place1 system
• Cedarhurst1 system
• East Hills1 system
• East Massapequa2 systems
• East Meadow1 system
• East Norwich2 systems
• East Rockaway1 system
• East Williston1 system
• Elmont2 systems
• Farmingdale1 system
• Floral Park1 system
• Flower Hill3 systems
• Franklin Square3 systems
• Freeport1 system
• Garden City1 system
• Garden City Park1 system
• Garden City South1 system
• Glen Cove1 system
• Glen Head1 system
• Glenwood Landing1 system
• Great Neck1 system
• Great Neck Estates1 system
• Great Neck Gardens1 system
• Great Neck Plaza1 system
• Greenvale1 system
• Harbor Hills1 system
• Hempstead1 system
• Herricks1 system
• Hewlett1 system
• Hewlett Bay Park1 system
• Hewlett Harbor1 system
• Hewlett Neck1 system
• Hicksville1 system
• Inwood1 system
• Jericho1 system
• Kensington1 system
• Kings Point1 system
• Lake Success1 system
• Lakeview1 system
• Lattingtown1 system
• Laurel Hollow1 system
• Lawrence1 system
• Levittown4 systems
• Lido Beach1 system
• Locust Valley1 system
• Long Beach1 system
• Lynbrook1 system
• Malverne1 system
• Malverne Park Oaks1 system
• Manhasset1 system
• Manhasset Hills1 system
• Manorhaven1 system
• Massapequa1 system
• Massapequa Park1 system
• Matinecock1 system
• Merrick1 system
• Mill Neck2 systems
• Mineola1 system
• Munsey Park1 system
• Muttontown1 system
• New Cassel1 system
• New Hyde Park1 system
• North Bellmore2 systems
• North Hills3 systems
• North Lynbrook1 system
• North Massapequa1 system
• North Merrick2 systems
• North New Hyde Park3 systems
• North Valley Stream1 system
• North Wantagh1 system
• Oceanside1 system
• Old Bethpage2 systems
• Old Brookville2 systems
• Old Westbury1 system
• Oyster Bay1 system
• Oyster Bay Cove3 systems
• Plainedge2 systems
• Plainview2 systems
• Plandome1 system
• Plandome Heights1 system
• Plandome Manor1 system
• Point Lookout1 system
• Port Washington2 systems
• Port Washington North1 system
• Rockville Centre1 system
• Roosevelt1 system
• Roslyn1 system
• Roslyn Estates1 system
• Roslyn Harbor1 system
• Roslyn Heights2 systems
• Russell Gardens1 system
• Saddle Rock1 system
• Saddle Rock Estates1 system
• Salisbury2 systems
• Sands Point1 system
• Sea Cliff1 system
• Seaford1 system
• Searingtown2 systems
• South Farmingdale1 system
• South Floral Park1 system
• South Hempstead2 systems
• South Valley Stream1 system
• Stewart Manor1 system
• Syosset1 system
• Thomaston1 system
• Uniondale1 system
• University Gardens1 system
• Upper Brookville3 systems
• Valley Stream1 system
• Wantagh1 system
• Westbury2 systems
• West Hempstead2 systems
• Williston Park1 system
• Woodbury1 system
• Woodmere1 system
• Woodsburgh1 system