Water quality for ZIP code 11930
ZIP 11930 covers Amagansett, Napeague, and East Hampton North 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 |
|---|---|---|---|---|
| Maidstone Park Cottages East Hampton (v) |
34 | 2 | 4.3 mi | |
| Dering Harbor Water District Shelter Island (t) |
14 | 0 | 7.1 mi | |
| Shelter Island Heights Association Shelter Island (t) |
500 | 2 | 13.5 mi | |
| West Neck Water District Shelter Island (t) |
100 | 0 | 13.9 mi | |
| Fishers Island Water Works Southold (t) |
380 | 1 | 14.8 mi | |
| Greenport Water District Southold (t) |
2,050 | 1 | 16.1 mi | |
| Hampton Bays Water District Southampton (t) |
12,500 | 0 | 23.5 mi | |
| Calverton Hills Owners Association Brookhaven (t) |
897 | 2 | 29.7 mi | |
| Peconic River Mobile Home Park Riverhead (t) |
75 | 0 | 30.6 mi | |
| Peconic View Mobile Home Park Riverhead (t) |
40 | 0 | 32.3 mi | |
| Riverhead Water District Riverhead (t) |
35,000 | 1 | 32.4 mi | |
| Riverside Water District Southampton (v) |
2,050 | 0 | 37.9 mi | |
| Brookhaven National Laboratory Brookhaven (t) |
3,500 | 0 | 40.9 mi | |
| Seaview Water Company Brookhaven (t) |
1,400 | 0 | 44.7 mi | |
| ST James Water District Smithtown (t) |
10,587 | 0 | 55.3 mi | |
| Smithtown Water District Smithtown (t) |
19,635 | 0 | 59.2 mi | |
| Ocean Beach Water District Islip (t) |
4,500 | 0 | 60.2 mi | |
| Saltaire Water District Islip (t) |
2,000 | 0 | 61.9 mi | |
| Greenlawn Water District Huntington (t) |
42,000 | 3 | 65.7 mi | |
| Dix Hills Water District Huntington (t) |
34,522 | 1 | 66.4 mi | |
| Oak Beach Public Water Supply Babylon (t) |
66 | 1 | 67.0 mi | |
| Robert Moses State Park Babylon (t) |
11,600 | 0 | 67.3 mi | |
| Northport VA Hospital Huntington (t) |
3,088 | 1 | 68.6 mi | |
| South Huntington Water District Huntington (t) |
81,760 | 1 | 69.8 mi | |
| West Gilgo Beach Association Babylon (t) |
300 | 0 | 73.8 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 |
|---|---|---|---|---|
|
Amagansett Laundry East Hampton (t) |
50 | 0 | 0 | |
|
Old Stone Market Brookhaven (t) |
125 | 0 | 0 | |
|
Maidstone Market East Hampton (t) |
100 | 0 | 0 | |
|
Swans Marina East Hampton (v) |
200 | 0 | 0 | |
|
Maidstone Harbor Marina East Hampton (t) |
100 | 0 | 0 | |
|
East Hampton Point East Hampton (v) |
100 | 1 | 1 | |
|
Maidstone Gun Club East Hampton (t) |
100 | 0 | 0 | |
|
Camp Blue Bay East Hampton (v) |
200 | 0 | 0 | |
|
Rita Cantina East Hampton (t) |
70 | 0 | 0 | |
|
Long House Reserve East Hampton (t) |
50 | 0 | 0 | |
|
Maidstone Park Beach/ballfield East Hampton (t) |
100 | 0 | 0 | |
|
Alberts Landing East Hampton (t) |
75 | 0 | 0 | |
|
Fresh Pond Road Park & Beach East Hampton (v) |
100 | 0 | 0 | |
|
Fort Pond House East Hampton (t) |
50 | 0 | 0 | |
|
South Lake Drive Park East Hampton (t) |
50 | 0 | 0 | |
|
Barcelona Bungalows East Hampton (v) |
36 | 0 | 0 | |
|
Buckskill Tennis Club East Hampton (v) |
60 | 0 | 0 | |
|
Surfside Inn East Hampton (t) |
100 | 0 | 0 | |
|
Atlantic Bluffs Club East Hampton (t) |
200 | 0 | 0 | |
|
Camp Quinipet Shelter Island (t) |
150 | 0 | 0 | |
|
Seascape Motel East Hampton (t) |
25 | 0 | 0 | |
|
Speedway #7794 (fna Hess General Store) East Hampton (t) |
200 | 0 | 0 | |
|
Wolffer Estates Stables Southampton (t) |
45 | 1 | 0 | |
|
LA Capannina Southampton (t) |
100 | 0 | 0 | |
|
Sag Harbor State Golf Course Southampton (t) |
200 | 0 | 0 | |
|
Montauket Hotel East Hampton (t) |
100 | 0 | 0 | |
|
Townline Bbq East Hampton (t) |
150 | 0 | 0 | |
|
Old Stove Pub Southampton (t) |
150 | 1 | 0 | |
|
Wolffer Estate Vineyard Southampton (t) |
50 | 0 | 0 | |
|
Gotham Tennis East Hampton (t) |
30 | 0 | 0 | |
|
Outrigger Coop East Hampton (t) |
36 | 0 | 0 | |
|
Whales Tale Shelter Island (t) |
150 | 0 | 0 | |
|
Perlman Music School Shelter Island (t) |
80 | 0 | 0 | |
|
Islander(pat & Steves Family Restaurant Shelter Island (t) |
75 | 0 | 0 | |
|
Shelter Island Slice Shelter Island (t) |
60 | 1 | 0 | |
|
Commander Cody Seafood Shelter Island (t) |
50 | 0 | 0 | |
|
Rams Head Inn Shelter Island (t) |
50 | 0 | 0 | |
|
Mashomack Pres. Visitor Ctr. Shelter Island (t) |
50 | 0 | 0 | |
|
Atlantic Golf Club Southampton (t) |
100 | 0 | 0 | |
|
Shelter Island Senior Citizens Center Shelter Island (t) |
35 | 0 | 0 | |
|
Vine Street Cafe Shelter Island (t) |
80 | 0 | 0 | |
|
Ellis Country Market Shelter Island (t) |
50 | 0 | 0 | |
|
Wades Beach Shelter Island (t) |
75 | 0 | 0 | |
|
Kingdom Hall of Jehovah Witnesses |
500 | 0 | 0 | |
|
Mill Creek Marina Southampton (t) |
100 | 0 | 0 | |
|
Coecles Harbor Marina Shelter Island (t) |
150 | 0 | 0 | |
|
Orient Beach State Park Southold (t) |
800 | 0 | 0 | |
|
All Seasons Catering Shelter Island (t) |
50 | 0 | 0 | |
|
Kyles (previously Cafe 27) Shelter Island (t) |
150 | 0 | 0 | |
|
Island Boatyard & Marina Shelter Island (t) |
100 | 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.