Water quality for ZIP code 11565
ZIP 11565 covers Malverne, Malverne Park Oaks, and Lynbrook in Nassau County, New York, one of 69 ZIP codes in the 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 | 1.9 mi | |
| West Hempstead WD Hempstead (t) |
32,031 | 1 | 2.0 mi | |
| Franklin Square WD Hempstead (t), Stewart Manor (v) |
20,000 | 0 | 2.2 mi | |
| WA of Western Nassau Hempstead (t), North Hempstead (t) |
120,000 | 0 | 2.8 mi | |
| Hempstead (v) Hempstead (v) |
56,000 | 1 | 3.4 mi | |
| Cathedral Gardens WD Hempstead (t) |
1,500 | 0 | 3.4 mi | |
| Garden City (v) Garden City (v) |
23,272 | 0 | 3.9 mi | |
| Freeport (v) Freeport (v) |
45,000 | 0 | 4.8 mi | |
| Mineola (v) Mineola (v) |
20,600 | 0 | 5.3 mi | |
| Garden City Park WD New Hyde Park (v) |
18,000 | 0 | 5.4 mi | |
| Williston Park (v) Williston Park (v) |
7,287 | 0 | 5.9 mi | |
| Long Beach City Long Beach (c) |
35,000 | 0 | 6.0 mi | |
| Carle Place WD North Hempstead (t) |
9,005 | 0 | 6.2 mi | |
| East Williston (v) East Williston (v) |
2,556 | 0 | 6.3 mi | |
| Town of Hempstead Water Department Hempstead (t) |
110,000 | 0 | 6.7 mi | |
| Lido-Point Lookout WD Hempstead (t) |
2,000 | 0 | 6.7 mi | |
| Albertson WD North Hempstead (t) |
13,500 | 1 | 6.9 mi | |
| Manhasset Lakeville WD North Hempstead (t) |
43,000 | 0 | 7.4 mi | |
| Westbury WD North Hempstead (t), Westbury (v) |
20,500 | 0 | 7.8 mi | |
| Liberty Utilities New York Merrick Hempstead (t) |
135,000 | 1 | 8.3 mi | |
| Roslyn WD Roslyn (v) |
17,000 | 0 | 8.6 mi | |
| Old Westbury (v) Old Westbury (v) |
4,700 | 1 | 8.6 mi | |
| Plandome (v) Plandome (v) |
1,600 | 0 | 9.3 mi | |
| Hicksville WD Oyster Bay (t) |
48,000 | 0 | 9.6 mi | |
| Port Washington WD North Hempstead (t) |
34,000 | 0 | 10.6 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.