Water quality in Hewlett, New York
Hewlett 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 |
|---|---|---|---|---|
| Rockville Centre (v) Rockville Center (v) |
24,700 | 0 | 3.4 mi | |
| Long Beach City Long Beach (c) |
35,000 | 0 | 4.0 mi | |
| Franklin Square WD Hempstead (t), Stewart Manor (v) |
20,000 | 0 | 4.5 mi | |
| West Hempstead WD Hempstead (t) |
32,031 | 1 | 4.6 mi | |
| WA of Western Nassau Hempstead (t), North Hempstead (t) |
120,000 | 0 | 4.6 mi | |
| Lido-Point Lookout WD Hempstead (t) |
2,000 | 0 | 5.7 mi | |
| Freeport (v) Freeport (v) |
45,000 | 0 | 5.8 mi | |
| Hempstead (v) Hempstead (v) |
56,000 | 1 | 5.8 mi | |
| Cathedral Gardens WD Hempstead (t) |
1,500 | 0 | 5.8 mi | |
| Garden City (v) Garden City (v) |
23,272 | 0 | 6.4 mi | |
| Garden City Park WD New Hyde Park (v) |
18,000 | 0 | 7.8 mi | |
| Mineola (v) Mineola (v) |
20,600 | 0 | 7.8 mi | |
| Williston Park (v) Williston Park (v) |
7,287 | 0 | 8.4 mi | |
| Carle Place WD North Hempstead (t) |
9,005 | 0 | 8.8 mi | |
| East Williston (v) East Williston (v) |
2,556 | 0 | 8.8 mi | |
| Town of Hempstead Water Department Hempstead (t) |
110,000 | 0 | 8.9 mi | |
| Albertson WD North Hempstead (t) |
13,500 | 1 | 9.4 mi | |
| Manhasset Lakeville WD North Hempstead (t) |
43,000 | 0 | 9.5 mi | |
| Liberty Utilities New York Merrick Hempstead (t) |
135,000 | 1 | 9.8 mi | |
| Westbury WD North Hempstead (t), Westbury (v) |
20,500 | 0 | 10.3 mi | |
| Roslyn WD Roslyn (v) |
17,000 | 0 | 11.1 mi | |
| Old Westbury (v) Old Westbury (v) |
4,700 | 1 | 11.2 mi | |
| Plandome (v) Plandome (v) |
1,600 | 0 | 11.4 mi | |
| Hicksville WD Oyster Bay (t) |
48,000 | 0 | 12.0 mi | |
| Massapequa WD Massapequa Park (v), Oyster Bay (t) |
43,000 | 0 | 12.4 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 |
|---|---|---|---|---|
|
Jones Beach State Park Hempstead (t) |
30,799 | 0 | 0 | |
|
Tobay Beach Oyster Bay (t) |
2,410 | 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 Hewlett 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. Retrieved from ECHO on Oct 11, 2026.