Water quality in North Massapequa, New York
North Massapequa is in Nassau County. 44 active public water systems serve the county; 8 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Nassau County
39 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Massapequa WD Massapequa Park (v), Oyster Bay (t) |
43,000 | 0 | 2.0 mi | |
| Farmingdale (v) Farmingdale (v) |
8,744 | 0 | 2.4 mi | |
| Liberty Utilities New York Merrick Hempstead (t) |
135,000 | 1 | 3.0 mi | |
| Bethpage WD Oyster Bay (t) |
33,000 | 0 | 3.0 mi | |
| Plainview WD Oyster Bay (t) |
34,000 | 0 | 4.9 mi | |
| Town of Hempstead Water Department Hempstead (t) |
110,000 | 0 | 4.9 mi | |
| Hicksville WD Oyster Bay (t) |
48,000 | 0 | 5.0 mi | |
| Westbury WD North Hempstead (t), Westbury (v) |
20,500 | 0 | 6.8 mi | |
| Freeport (v) Freeport (v) |
45,000 | 0 | 7.0 mi | |
| Cathedral Gardens WD Hempstead (t) |
1,500 | 0 | 7.9 mi | |
| Hempstead (v) Hempstead (v) |
56,000 | 1 | 7.9 mi | |
| Carle Place WD North Hempstead (t) |
9,005 | 0 | 8.1 mi | |
| Old Westbury (v) Old Westbury (v) |
4,700 | 1 | 8.9 mi | |
| Jericho WD Oyster Bay (t) |
58,000 | 1 | 8.9 mi | |
| Garden City (v) Garden City (v) |
23,272 | 0 | 9.1 mi | |
| Rockville Centre (v) Rockville Center (v) |
24,700 | 0 | 9.2 mi | |
| Mineola (v) Mineola (v) |
20,600 | 0 | 9.4 mi | |
| East Williston (v) East Williston (v) |
2,556 | 0 | 9.5 mi | |
| West Hempstead WD Hempstead (t) |
32,031 | 1 | 9.9 mi | |
| Williston Park (v) Williston Park (v) |
7,287 | 0 | 10.1 mi | |
| Albertson WD North Hempstead (t) |
13,500 | 1 | 10.6 mi | |
| Lido-Point Lookout WD Hempstead (t) |
2,000 | 0 | 10.6 mi | |
| Garden City Park WD New Hyde Park (v) |
18,000 | 0 | 11.1 mi | |
| Roslyn WD Roslyn (v) |
17,000 | 0 | 11.1 mi | |
| Franklin Square WD Hempstead (t), Stewart Manor (v) |
20,000 | 0 | 11.2 mi |
Non-community systems in Nassau County (4: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Tobay Beach Oyster Bay (t) |
2,410 | 0 | 0 | |
|
Jones Beach State Park Hempstead (t) |
30,799 | 0 | 0 | |
|
Beaver Dam Winter Sports Matinecock (v), Oyster Bay (t) |
35 | 0 | 0 | |
|
Seawanhaka Yacht Club Centre Island (v), Oyster Bay (t) |
60 | 0 | 0 |
About this data
Water systems are matched to Nassau County, nearest to North Massapequa first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New York records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.