Water quality for ZIP code 11784
ZIP 11784 covers Selden, Coram, Farmingville, and Centereach 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 |
|---|---|---|---|---|
| ST James Water District Smithtown (t) |
10,587 | 0 | 5.8 mi | |
| Brookhaven National Laboratory Brookhaven (t) |
3,500 | 0 | 9.1 mi | |
| Seaview Water Company Brookhaven (t) |
1,400 | 0 | 9.4 mi | |
| Smithtown Water District Smithtown (t) |
19,635 | 0 | 9.5 mi | |
| Riverside Water District Southampton (v) |
2,050 | 0 | 12.1 mi | |
| Greenlawn Water District Huntington (t) |
42,000 | 3 | 15.9 mi | |
| Ocean Beach Water District Islip (t) |
4,500 | 0 | 16.5 mi | |
| Dix Hills Water District Huntington (t) |
34,522 | 1 | 16.6 mi | |
| Saltaire Water District Islip (t) |
2,000 | 0 | 16.8 mi | |
| Peconic View Mobile Home Park Riverhead (t) |
40 | 0 | 17.6 mi | |
| Riverhead Water District Riverhead (t) |
35,000 | 1 | 17.6 mi | |
| Northport VA Hospital Huntington (t) |
3,088 | 1 | 19.0 mi | |
| Robert Moses State Park Babylon (t) |
11,600 | 0 | 19.2 mi | |
| Peconic River Mobile Home Park Riverhead (t) |
75 | 0 | 19.3 mi | |
| South Huntington Water District Huntington (t) |
81,760 | 1 | 20.0 mi | |
| Calverton Hills Owners Association Brookhaven (t) |
897 | 2 | 20.2 mi | |
| Oak Beach Public Water Supply Babylon (t) |
66 | 1 | 21.1 mi | |
| West Gilgo Beach Association Babylon (t) |
300 | 0 | 26.5 mi | |
| Hampton Bays Water District Southampton (t) |
12,500 | 0 | 27.0 mi | |
| West Neck Water District Shelter Island (t) |
100 | 0 | 38.8 mi | |
| Greenport Water District Southold (t) |
2,050 | 1 | 39.1 mi | |
| Shelter Island Heights Association Shelter Island (t) |
500 | 2 | 39.2 mi | |
| Fishers Island Water Works Southold (t) |
380 | 1 | 42.9 mi | |
| Dering Harbor Water District Shelter Island (t) |
14 | 0 | 45.7 mi | |
| Maidstone Park Cottages East Hampton (v) |
34 | 2 | 46.4 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 |
|---|---|---|---|---|
|
Caribbean Spot Brookhaven (t) |
200 | 0 | 0 | |
|
Joes Kwik Mart Brookhaven (t) |
200 | 0 | 0 | |
|
First Student-Middle Island(was Laidlaw) Brookhaven (t) |
125 | 0 | 0 | |
|
Oldcastle Infrastructure Brookhaven (t) |
40 | 0 | 0 | |
|
YMCA Brookhaven Roe Brookhaven (t) |
100 | 0 | 0 | |
|
555 Professional Bldg. Brookhaven (t) |
30 | 0 | 0 | |
|
Shell Station Yaphank |
100 | 1 | 0 | |
|
Valero Brookhaven (t) |
1,000 | 0 | 0 | |
|
BP Gas-Ridge Brookhaven (t) |
75 | 0 | 0 | |
|
1983 Montauk Hwy Offices Coparts Brookhaven (t) |
190 | 0 | 0 | |
|
Varneys Restaurant Brookhaven (t) |
48 | 0 | 0 | |
|
North Shore Office Building Brookhaven (t) |
50 | 0 | 0 | |
|
Exxon (fna Hess Mart Calverton) Brookhaven (t) |
100 | 0 | 0 | |
|
Silly Lilly Fishing Station Brookhaven (t) |
100 | 0 | 0 | |
|
Kings Park Launch Ramp Smithtown (t) |
100 | 0 | 0 | |
|
D. S. Shanahans Smithtown (t) |
150 | 0 | 0 | |
|
Bellport Village Beach Brookhaven (t) |
50 | 0 | 0 | |
|
Long Island Game Farm Brookhaven (t) |
200 | 0 | 0 | |
|
Rock Hill Country Club Brookhaven (t) |
150 | 0 | 0 | |
|
East Moriches Primary Care |
500 | 0 | 0 | |
|
Great Gun Beach Brookhaven (t) |
100 | 1 | 0 | |
|
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 | |
|
Coastal Pipeline Corp. Riverhead (t) |
30 | 0 | 0 | |
|
Hampton Hills Golf Club Southampton (t) |
150 | 0 | 0 | |
|
Cedar Beach Sportfishing Educ. Center Babylon (t) |
200 | 0 | 0 | |
|
Captree State Park Babylon (t) |
4,100 | 0 | 0 | |
|
Overlook Beach Babylon (t) |
450 | 0 | 0 | |
|
Cedar Beach (golf Course/concession) Babylon (t) |
500 | 0 | 0 | |
|
Gilgo Beach Babylon (t) |
500 | 0 | 0 | |
|
EV and EM Vineyard Riverhead (t) |
100 | 0 | 0 | |
|
Shelter Island Iga Market Shelter Island (t) |
100 | 0 | 0 | |
|
Rose Hill Vineyards |
30 | 0 | 0 | |
|
Sea Haven Resort Motel (fna Sun+sand) Southampton (v) |
50 | 0 | 0 | |
|
McCall Farm Winery Southold (t) |
40 | 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 | |
|
Sandy Hollow Day Camp Southampton (t) |
120 | 0 | 0 | |
|
Corey Creek Vineyards Southold (t) |
75 | 1 | 0 | |
|
South Harbor Park Southold (t) |
50 | 0 | 0 | |
|
Oysterpond Elementary School Southold (t) |
106 | 1 | 0 | |
|
Jefferson Temple Church of God in Christ Southold (t) |
100 | 0 | 0 | |
|
Kingdom Hall of Jehovah Witnesses |
500 | 0 | 0 | |
|
Atlantic Golf Club Southampton (t) |
100 | 0 | 0 | |
|
Mill Creek Marina Southampton (t) |
100 | 0 | 0 | |
|
Pridwin Hotel 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.