Water quality for ZIP code 11946
ZIP 11946 covers Hampton Bays, Flanders, and Shinnecock Hills in Suffolk County, New York, one of 108 ZIP codes in the county. 146 active public water systems serve the county; 25 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 Suffolk County
25 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Calverton Hills Owners Association Brookhaven (t) |
897 | 2 | 7.5 mi | |
| Peconic River Mobile Home Park Riverhead (t) |
75 | 0 | 8.5 mi | |
| Peconic View Mobile Home Park Riverhead (t) |
40 | 0 | 10.3 mi | |
| Riverhead Water District Riverhead (t) |
35,000 | 1 | 11.3 mi | |
| Riverside Water District Southampton (v) |
2,050 | 0 | 15.0 mi | |
| West Neck Water District Shelter Island (t) |
100 | 0 | 16.4 mi | |
| Shelter Island Heights Association Shelter Island (t) |
500 | 2 | 16.7 mi | |
| Brookhaven National Laboratory Brookhaven (t) |
3,500 | 0 | 18.0 mi | |
| Greenport Water District Southold (t) |
2,050 | 1 | 18.6 mi | |
| Maidstone Park Cottages East Hampton (v) |
34 | 2 | 20.8 mi | |
| Dering Harbor Water District Shelter Island (t) |
14 | 0 | 21.1 mi | |
| Seaview Water Company Brookhaven (t) |
1,400 | 0 | 21.2 mi | |
| Suffolk County Water Authority Babylon (t), Brookhaven (t), East Hampton (t) and 6 more |
1,100,000 | 0 | 21.7 mi | |
| Fishers Island Water Works Southold (t) |
380 | 1 | 21.9 mi | |
| ST James Water District Smithtown (t) |
10,587 | 0 | 32.9 mi | |
| Smithtown Water District Smithtown (t) |
19,635 | 0 | 36.6 mi | |
| Ocean Beach Water District Islip (t) |
4,500 | 0 | 36.7 mi | |
| Saltaire Water District Islip (t) |
2,000 | 0 | 38.4 mi | |
| Greenlawn Water District Huntington (t) |
42,000 | 3 | 43.0 mi | |
| Dix Hills Water District Huntington (t) |
34,522 | 1 | 43.3 mi | |
| Oak Beach Public Water Supply Babylon (t) |
66 | 1 | 43.5 mi | |
| Robert Moses State Park Babylon (t) |
11,600 | 0 | 43.8 mi | |
| Northport VA Hospital Huntington (t) |
3,088 | 1 | 46.2 mi | |
| South Huntington Water District Huntington (t) |
81,760 | 1 | 46.9 mi | |
| West Gilgo Beach Association Babylon (t) |
300 | 0 | 50.2 mi |
Non-community systems in Suffolk County (120: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sea Haven Resort Motel (fna Sun+sand) Southampton (v) |
50 | 0 | 0 | |
|
Sandy Hollow Day Camp Southampton (t) |
120 | 0 | 0 | |
|
EV and EM Vineyard Riverhead (t) |
100 | 0 | 0 | |
|
Shelter Island Iga Market Shelter Island (t) |
100 | 0 | 0 | |
|
Hampton Hills Golf Club Southampton (t) |
150 | 0 | 0 | |
|
McCall Farm Winery Southold (t) |
40 | 0 | 0 | |
|
Rose Hill Vineyards |
30 | 0 | 0 | |
|
LA Antigua Southold (t) |
150 | 0 | 0 | |
|
Kingdom Hall of Jehovah Witnesses |
500 | 0 | 0 | |
|
Atlantic Golf Club Southampton (t) |
100 | 0 | 0 | |
|
Pugliese Vineyards Southold (t) |
50 | 1 | 0 | |
|
Coastal Pipeline Corp. Riverhead (t) |
30 | 0 | 0 | |
|
Lenz Winery Southold (t) |
50 | 2 | 0 | |
|
Eastport Animal Hospital Brookhaven (t) |
50 | 0 | 0 | |
|
Ighl, East Moriches Brookhaven (t) |
50 | 0 | 0 | |
|
78 Montauk Highway LLC (previouslypiffe) |
100 | 0 | 0 | |
|
94 Montauk Highway |
25 | 0 | 0 | |
|
South Harbor Park Southold (t) |
50 | 0 | 0 | |
|
Mill Creek Marina Southampton (t) |
100 | 0 | 0 | |
|
BP Mart Peconic Southold (t) |
100 | 1 | 0 | |
|
Corey Creek Vineyards Southold (t) |
75 | 1 | 0 | |
|
Rock Hill Country Club Brookhaven (t) |
150 | 0 | 0 | |
|
Wolffer Estate Vineyard Southampton (t) |
50 | 0 | 0 | |
|
East Moriches Primary Care |
500 | 0 | 0 | |
|
Long Island Game Farm Brookhaven (t) |
200 | 0 | 0 | |
|
Old Stove Pub Southampton (t) |
150 | 1 | 0 | |
|
Oysterpond Elementary School Southold (t) |
106 | 1 | 0 | |
|
Jefferson Temple Church of God in Christ Southold (t) |
100 | 0 | 0 | |
|
Townline Bbq East Hampton (t) |
150 | 0 | 0 | |
|
LA Capannina Southampton (t) |
100 | 0 | 0 | |
|
Wolffer Estates Stables Southampton (t) |
45 | 1 | 0 | |
|
Speedway #7794 (fna Hess General Store) East Hampton (t) |
200 | 0 | 0 | |
|
Island Boatyard & Marina Shelter Island (t) |
100 | 0 | 0 | |
|
Pridwin Hotel Shelter Island (t) |
100 | 0 | 0 | |
|
Wades Beach Shelter Island (t) |
75 | 0 | 0 | |
|
Sag Harbor State Golf Course Southampton (t) |
200 | 0 | 0 | |
|
Great Gun Beach Brookhaven (t) |
100 | 1 | 0 | |
|
Eccentric Bagel Shelter Island (t) |
50 | 0 | 0 | |
|
American Legion Post #281 Shelter Island (t) |
100 | 0 | 0 | |
|
Shelter Island School Shelter Island (t) |
315 | 1 | 0 | |
|
Shelter Island Library |
258 | 0 | 0 | |
|
Shelter Island Town Hall Shelter Island (t) |
50 | 0 | 0 | |
|
Shelter Island Senior Citizens Center Shelter Island (t) |
35 | 0 | 0 | |
|
Shelter Island Nutrition Program Shelter Island (t) |
75 | 0 | 0 | |
|
Kyles (previously Cafe 27) Shelter Island (t) |
150 | 0 | 0 | |
|
All Seasons Catering Shelter Island (t) |
50 | 0 | 0 | |
|
Buckskill Tennis Club East Hampton (v) |
60 | 0 | 0 | |
|
Vine Street Cafe Shelter Island (t) |
80 | 0 | 0 | |
|
Marias Kitchen Shelter Island (t) |
25 | 0 | 0 | |
|
Ellis Country Market Shelter Island (t) |
50 | 0 | 0 |
About this data
Water systems are matched to Suffolk 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.