Water quality for ZIP code 11940
ZIP 11940 covers East Moriches 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 |
|---|---|---|---|---|
| Riverside Water District Southampton (v) |
2,050 | 0 | 5.1 mi | |
| Brookhaven National Laboratory Brookhaven (t) |
3,500 | 0 | 7.2 mi | |
| Peconic View Mobile Home Park Riverhead (t) |
40 | 0 | 7.3 mi | |
| Peconic River Mobile Home Park Riverhead (t) |
75 | 0 | 7.8 mi | |
| Calverton Hills Owners Association Brookhaven (t) |
897 | 2 | 8.2 mi | |
| Seaview Water Company Brookhaven (t) |
1,400 | 0 | 8.5 mi | |
| Riverhead Water District Riverhead (t) |
35,000 | 1 | 9.1 mi | |
| Hampton Bays Water District Southampton (t) |
12,500 | 0 | 12.7 mi | |
| ST James Water District Smithtown (t) |
10,587 | 0 | 21.4 mi | |
| Ocean Beach Water District Islip (t) |
4,500 | 0 | 24.1 mi | |
| Smithtown Water District Smithtown (t) |
19,635 | 0 | 24.9 mi | |
| Saltaire Water District Islip (t) |
2,000 | 0 | 25.8 mi | |
| West Neck Water District Shelter Island (t) |
100 | 0 | 27.5 mi | |
| Shelter Island Heights Association Shelter Island (t) |
500 | 2 | 27.9 mi | |
| Greenport Water District Southold (t) |
2,050 | 1 | 28.9 mi | |
| Oak Beach Public Water Supply Babylon (t) |
66 | 1 | 30.9 mi | |
| Dix Hills Water District Huntington (t) |
34,522 | 1 | 31.0 mi | |
| Greenlawn Water District Huntington (t) |
42,000 | 3 | 31.1 mi | |
| Robert Moses State Park Babylon (t) |
11,600 | 0 | 31.2 mi | |
| Fishers Island Water Works Southold (t) |
380 | 1 | 32.6 mi | |
| Maidstone Park Cottages East Hampton (v) |
34 | 2 | 33.3 mi | |
| Dering Harbor Water District Shelter Island (t) |
14 | 0 | 33.3 mi | |
| Northport VA Hospital Huntington (t) |
3,088 | 1 | 34.4 mi | |
| South Huntington Water District Huntington (t) |
81,760 | 1 | 34.7 mi | |
| West Gilgo Beach Association Babylon (t) |
300 | 0 | 37.6 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 |
|---|---|---|---|---|
|
94 Montauk Highway |
25 | 0 | 0 | |
|
78 Montauk Highway LLC (previouslypiffe) |
100 | 0 | 0 | |
|
Ighl, East Moriches Brookhaven (t) |
50 | 0 | 0 | |
|
Eastport Animal Hospital Brookhaven (t) |
50 | 0 | 0 | |
|
East Moriches Primary Care |
500 | 0 | 0 | |
|
Rock Hill Country Club Brookhaven (t) |
150 | 0 | 0 | |
|
Long Island Game Farm Brookhaven (t) |
200 | 0 | 0 | |
|
Great Gun Beach Brookhaven (t) |
100 | 1 | 0 | |
|
Hampton Hills Golf Club Southampton (t) |
150 | 0 | 0 | |
|
Coastal Pipeline Corp. Riverhead (t) |
30 | 0 | 0 | |
|
Exxon (fna Hess Mart Calverton) Brookhaven (t) |
100 | 0 | 0 | |
|
Silly Lilly Fishing Station Brookhaven (t) |
100 | 0 | 0 | |
|
BP Gas-Ridge Brookhaven (t) |
75 | 0 | 0 | |
|
Varneys Restaurant Brookhaven (t) |
48 | 0 | 0 | |
|
1983 Montauk Hwy Offices Coparts Brookhaven (t) |
190 | 0 | 0 | |
|
Shell Station Yaphank |
100 | 1 | 0 | |
|
Oldcastle Infrastructure Brookhaven (t) |
40 | 0 | 0 | |
|
Bellport Village Beach Brookhaven (t) |
50 | 0 | 0 | |
|
Valero Brookhaven (t) |
1,000 | 0 | 0 | |
|
First Student-Middle Island(was Laidlaw) Brookhaven (t) |
125 | 0 | 0 | |
|
Caribbean Spot Brookhaven (t) |
200 | 0 | 0 | |
|
North Shore Office Building Brookhaven (t) |
50 | 0 | 0 | |
|
Joes Kwik Mart Brookhaven (t) |
200 | 0 | 0 | |
|
YMCA Brookhaven Roe Brookhaven (t) |
100 | 0 | 0 | |
|
EV and EM Vineyard Riverhead (t) |
100 | 0 | 0 | |
|
555 Professional Bldg. Brookhaven (t) |
30 | 0 | 0 | |
|
Sea Haven Resort Motel (fna Sun+sand) Southampton (v) |
50 | 0 | 0 | |
|
Shelter Island Iga Market Shelter Island (t) |
100 | 0 | 0 | |
|
Rose Hill Vineyards |
30 | 0 | 0 | |
|
McCall Farm Winery Southold (t) |
40 | 0 | 0 | |
|
Sandy Hollow Day Camp Southampton (t) |
120 | 0 | 0 | |
|
LA Antigua Southold (t) |
150 | 0 | 0 | |
|
Pugliese Vineyards Southold (t) |
50 | 1 | 0 | |
|
Lenz Winery Southold (t) |
50 | 2 | 0 | |
|
BP Mart Peconic Southold (t) |
100 | 1 | 0 | |
|
South Harbor Park Southold (t) |
50 | 0 | 0 | |
|
Corey Creek Vineyards Southold (t) |
75 | 1 | 0 | |
|
Kingdom Hall of Jehovah Witnesses |
500 | 0 | 0 | |
|
Atlantic Golf Club Southampton (t) |
100 | 0 | 0 | |
|
Oysterpond Elementary School Southold (t) |
106 | 1 | 0 | |
|
Jefferson Temple Church of God in Christ Southold (t) |
100 | 0 | 0 | |
|
Mill Creek Marina Southampton (t) |
100 | 0 | 0 | |
|
Kings Park Launch Ramp Smithtown (t) |
100 | 0 | 0 | |
|
D. S. Shanahans Smithtown (t) |
150 | 0 | 0 | |
|
Wolffer Estate Vineyard Southampton (t) |
50 | 0 | 0 | |
|
Pridwin Hotel Shelter Island (t) |
100 | 0 | 0 | |
|
Old Stove Pub Southampton (t) |
150 | 1 | 0 | |
|
Island Boatyard & Marina Shelter Island (t) |
100 | 0 | 0 | |
|
Wades Beach Shelter Island (t) |
75 | 0 | 0 | |
|
Eccentric Bagel 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.