Nassau County, New York — public water systems
44 active public water systems serve Nassau County, reporting 1.4M people served.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
44
Population served
1.4M
Community systems
40
Groundwater share
100%
Water systems in Nassau County
| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Liberty Utilities New York - Lynbrook | Nassau | 220,000 | Community | Groundwater |
| 2 | Liberty Utilities New York - Merrick | Nassau | 135,000 | Community | Groundwater |
| 3 | Wa of Western Nassau | Nassau | 120,000 | Community | Groundwater |
| 4 | Town of Hempstead Water Department | Nassau | 110,000 | Community | Groundwater |
| 5 | Jericho Wd | Nassau | 58,000 | Community | Groundwater |
| 6 | Hempstead (V) | Nassau | 56,000 | Community | Groundwater |
| 7 | Hicksville Wd | Nassau | 48,000 | Community | Groundwater |
| 8 | Freeport (V) | Nassau | 45,000 | Community | Groundwater |
| 9 | South Farmingdale Wd | Nassau | 44,700 | Community | Groundwater |
| 10 | Massapequa Wd | Nassau | 43,000 | Community | Groundwater |
| 11 | Manhasset Lakeville Wd | Nassau | 43,000 | Community | Groundwater |
| 12 | Long Beach City | Nassau | 35,000 | Community | Groundwater |
| 13 | Port Washington Wd | Nassau | 34,000 | Community | Groundwater |
| 14 | Plainview Wd | Nassau | 34,000 | Community | Groundwater |
| 15 | Bethpage Wd | Nassau | 33,000 | Community | Groundwater |
| 16 | West Hempstead Wd | Nassau | 32,031 | Community | Groundwater |
| 17 | Jones Beach State Park | Nassau | 30,799 | Non-transient non-community | Groundwater |
| 18 | Glen Cove City | Nassau | 28,000 | Community | Groundwater |
| 19 | Rockville Centre (V) | Nassau | 24,700 | Community | Groundwater |
| 20 | Garden City (V) | Nassau | 23,272 | Community | Groundwater |
| 21 | Mineola (V) | Nassau | 20,600 | Community | Groundwater |
| 22 | Westbury Wd | Nassau | 20,500 | Community | Groundwater |
| 23 | Franklin Square Wd | Nassau | 20,000 | Community | Groundwater |
| 24 | Garden City Park Wd | Nassau | 18,000 | Community | Groundwater |
| 25 | Roslyn Wd | Nassau | 17,000 | Community | Groundwater |
| 26 | Albertson Wd | Nassau | 13,500 | Community | Groundwater |
| 27 | Liberty Utilities New York - Sea Cliff | Nassau | 13,400 | Community | Groundwater |
| 28 | Carle Place Wd | Nassau | 9,005 | Community | Groundwater |
| 29 | Farmingdale (V) | Nassau | 8,744 | Community | Groundwater |
| 30 | Oyster Bay Wd | Nassau | 8,700 | Community | Groundwater |
| 31 | Locust Valley Wd | Nassau | 7,500 | Community | Groundwater |
| 32 | Williston Park (V) | Nassau | 7,287 | Community | Groundwater |
| 33 | Bayville (V) | Nassau | 6,700 | Community | Groundwater |
| 34 | Old Westbury (V) | Nassau | 4,700 | Community | Groundwater |
| 35 | Sands Point (V) | Nassau | 2,900 | Community | Groundwater |
| 36 | East Williston (V) | Nassau | 2,556 | Community | Purchased groundwater |
| 37 | Tobay Beach | Nassau | 2,420 | Non-transient non-community | Groundwater |
| 38 | Lido-Point Lookout Wd | Nassau | 2,000 | Community | Groundwater |
| 39 | Plandome (V) | Nassau | 1,600 | Community | Purchased groundwater |
| 40 | Cathedral Gardens Wd | Nassau | 1,500 | Community | Purchased groundwater |
| 41 | Glenwood Wd | Nassau | 1,000 | Community | Purchased groundwater |
| 42 | Liberty Utilities New York - Mill Neck | Nassau | 280 | Community | Groundwater |
| 43 | Seawanhaka Yacht Club | Nassau | 60 | Transient non-community | Groundwater |
| 44 | Beaver Dam Winter Sports | Nassau | 35 | Transient non-community | Groundwater |