Lead pipes in Nassau County, New York
How many lead pipes are in Nassau County, NY?
Water systems based in Nassau County reported 11,392 lead service lines, 1,858 galvanized lines that need replacing and 107,184 lines of unknown material to EPA (Q3 2026). Western Nassau County has the most, with 4,463 lead and galvanized lines.
Who pays in New York
New York has no state law setting who pays for the private side, but the state Environmental Facilities Corporation has given cities large grants for lead line work, including the Lead Service Line Replacement Program and LIFT grants. Most large programs in the state, including New York City, Rochester, Syracuse and Buffalo, are free or nearly free for eligible owners.
Every Nassau County water system with lead lines
Systems are grouped by the county EPA lists as their main service area. Some serve towns in neighboring counties too.
| Water system | Lead | Galv. | Unknown | Program |
|---|---|---|---|---|
| Western Nassau County WA of Western Nassau | 4,459 | 4 | 483 | Not confirmed |
| Lynbrook area (Liberty Utilities) Liberty Utilities New York - Lynbrook | 4,078 | 193 | 22,608 | Not confirmed |
| Garden City Garden City (V) | 1,237 | 39 | 3,824 | Not confirmed |
| Hempstead Hempstead (V) | 119 | 614 | 5,463 | Not confirmed |
| Rockville Center Rockville Centre (V) | 186 | 455 | 4,391 | Not confirmed |
| Williston Park Williston Park (V) | 547 | 1 | 7 | Not confirmed |
| Mineola Mineola (V) | 407 | 70 | 4,523 | Not confirmed |
| Glen Cove Glen Cove City | 7 | 130 | 465 | Not confirmed |
| Roslyn Roslyn WD | 1 | 114 | 2,504 | Not confirmed |
| East Williston East Williston (V) | 112 | 0 | 597 | Not confirmed |
| North Hempstead Port Washington WD | 95 | 0 | 2,207 | Not confirmed |
| Freeport Freeport (V) | 19 | 48 | 9,505 | Not confirmed |
| North Hempstead Manhasset Lakeville WD | 10 | 41 | 320 | Not confirmed |
| Liberty Utilities New York Liberty Utilities New York - Merrick | 32 | 16 | 253 | Not confirmed |
| Oyster Bay Bethpage WD | 27 | 10 | 61 | Not confirmed |
| Hempstead Town of Hempstead Water Department | 20 | 14 | 30,533 | Not confirmed |
| Old Westbury Old Westbury (V) | 0 | 30 | 43 | Not confirmed |
| New Hyde Park Garden City Park WD | 15 | 9 | 229 | Not confirmed |
| Oyster Bay Oyster Bay WD | 0 | 22 | 1,306 | Not confirmed |
| North Hempstead Carle Place WD | 0 | 16 | 1,759 | Not confirmed |
| Liberty Utilities New York Liberty Utilities New York - Sea Cliff | 2 | 13 | 556 | Not confirmed |
| Oyster Bay South Farmingdale WD | 2 | 4 | 325 | Not confirmed |
| North Hempstead Albertson WD | 3 | 2 | 32 | Not confirmed |
| Oyster Bay Jericho WD | 2 | 3 | 73 | Not confirmed |
| Massapequa Park Massapequa WD | 1 | 4 | 1,600 | Not confirmed |
| Oyster Bay Hicksville WD | 1 | 4 | 71 | Not confirmed |
| Hempstead West Hempstead WD | 4 | 0 | 58 | Not confirmed |
| North Hempstead Westbury WD | 3 | 0 | 0 | Not confirmed |
| Hempstead Lido-Point Lookout WD | 2 | 0 | 1,208 | Not confirmed |
| Plandome Plandome (V) | 0 | 1 | 18 | Not confirmed |
| Oyster Bay Glenwood WD | 0 | 1 | 0 | Not confirmed |
| Hempstead Franklin Square WD | 1 | 0 | 3,742 | Not confirmed |
| Long Beach Long Beach City | 0 | 0 | 8,420 | Not confirmed |
Systems over the new 10 ppb lead action level
Garden City (10.2 ppb, 2026-01 to 2026-06). See all systems over 10 ppb.
Common questions
How many lead pipes are in Nassau County, NY?
Water systems based in Nassau County reported 11,392 lead service lines, 1,858 galvanized lines that need replacing and 107,184 lines of unknown material to EPA (Q3 2026). Western Nassau County has the most, with 4,463 lead and galvanized lines.
Who pays to replace lead service lines in Nassau County?
It depends on your water utility. New York has no state law setting who pays for the private side, but the state Environmental Facilities Corporation has given cities large grants for lead line work, including the Lead Service Line Replacement Program and LIFT grants. We have not confirmed a homeowner program for a utility in this county yet, so ask your utility before you hire a contractor.
How do I find out if my house has a lead service line?
Look up your address on your water utility's service line inventory map, or check the pipe where it enters your home: lead is dull gray, soft, scratches to shiny silver, and a magnet won't stick. See our step-by-step guide.
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