Water quality in East Setauket, New York
East Setauket is in Suffolk 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 | 3.9 mi | |
| Smithtown Water District Smithtown (t) |
19,635 | 0 | 7.5 mi | |
| Brookhaven National Laboratory Brookhaven (t) |
3,500 | 0 | 12.4 mi | |
| Seaview Water Company Brookhaven (t) |
1,400 | 0 | 13.9 mi | |
| Greenlawn Water District Huntington (t) |
42,000 | 3 | 14.0 mi | |
| Riverside Water District Southampton (v) |
2,050 | 0 | 15.2 mi | |
| Dix Hills Water District Huntington (t) |
34,522 | 1 | 15.6 mi | |
| Northport VA Hospital Huntington (t) |
3,088 | 1 | 16.6 mi | |
| South Huntington Water District Huntington (t) |
81,760 | 1 | 18.5 mi | |
| Saltaire Water District Islip (t) |
2,000 | 0 | 19.1 mi | |
| Ocean Beach Water District Islip (t) |
4,500 | 0 | 19.3 mi | |
| Riverhead Water District Riverhead (t) |
35,000 | 1 | 19.7 mi | |
| Robert Moses State Park Babylon (t) |
11,600 | 0 | 19.9 mi | |
| Peconic View Mobile Home Park Riverhead (t) |
40 | 0 | 20.1 mi | |
| Peconic River Mobile Home Park Riverhead (t) |
75 | 0 | 21.8 mi | |
| Oak Beach Public Water Supply Babylon (t) |
66 | 1 | 22.6 mi | |
| Calverton Hills Owners Association Brookhaven (t) |
897 | 2 | 22.8 mi | |
| West Gilgo Beach Association Babylon (t) |
300 | 0 | 27.3 mi | |
| Hampton Bays Water District Southampton (t) |
12,500 | 0 | 29.9 mi | |
| West Neck Water District Shelter Island (t) |
100 | 0 | 40.3 mi | |
| Greenport Water District Southold (t) |
2,050 | 1 | 40.3 mi | |
| Shelter Island Heights Association Shelter Island (t) |
500 | 2 | 40.7 mi | |
| Fishers Island Water Works Southold (t) |
380 | 1 | 44.0 mi | |
| Dering Harbor Water District Shelter Island (t) |
14 | 0 | 47.5 mi | |
| Maidstone Park Cottages East Hampton (v) |
34 | 2 | 48.5 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 |
|---|---|---|---|---|
|
555 Professional Bldg. Brookhaven (t) |
30 | 0 | 0 | |
|
Caribbean Spot Brookhaven (t) |
200 | 0 | 0 | |
|
Kings Park Launch Ramp Smithtown (t) |
100 | 0 | 0 | |
|
First Student-Middle Island(was Laidlaw) Brookhaven (t) |
125 | 0 | 0 | |
|
Joes Kwik Mart Brookhaven (t) |
200 | 0 | 0 | |
|
D. S. Shanahans Smithtown (t) |
150 | 0 | 0 | |
|
Oldcastle Infrastructure Brookhaven (t) |
40 | 0 | 0 | |
|
North Shore Office Building Brookhaven (t) |
50 | 0 | 0 | |
|
YMCA Brookhaven Roe Brookhaven (t) |
100 | 0 | 0 | |
|
Shell Station Yaphank |
100 | 1 | 0 | |
|
BP Gas-Ridge Brookhaven (t) |
75 | 0 | 0 | |
|
Valero Brookhaven (t) |
1,000 | 0 | 0 | |
|
1983 Montauk Hwy Offices Coparts Brookhaven (t) |
190 | 0 | 0 | |
|
Varneys Restaurant Brookhaven (t) |
48 | 0 | 0 | |
|
Exxon (fna Hess Mart Calverton) Brookhaven (t) |
100 | 0 | 0 | |
|
Silly Lilly Fishing Station Brookhaven (t) |
100 | 0 | 0 | |
|
Long Island Game Farm Brookhaven (t) |
200 | 0 | 0 | |
|
Bellport Village Beach Brookhaven (t) |
50 | 0 | 0 | |
|
Rock Hill Country Club Brookhaven (t) |
150 | 0 | 0 | |
|
East Moriches Primary Care |
500 | 0 | 0 | |
|
Coastal Pipeline Corp. Riverhead (t) |
30 | 0 | 0 | |
|
94 Montauk Highway |
25 | 0 | 0 | |
|
Eastport Animal Hospital Brookhaven (t) |
50 | 0 | 0 | |
|
78 Montauk Highway LLC (previouslypiffe) |
100 | 0 | 0 | |
|
Ighl, East Moriches Brookhaven (t) |
50 | 0 | 0 | |
|
Great Gun Beach Brookhaven (t) |
100 | 1 | 0 | |
|
Cedar Beach Sportfishing Educ. Center Babylon (t) |
200 | 0 | 0 | |
|
Captree State Park Babylon (t) |
4,100 | 0 | 0 | |
|
Hampton Hills Golf Club Southampton (t) |
150 | 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 | |
|
McCall Farm Winery Southold (t) |
40 | 0 | 0 | |
|
Sea Haven Resort Motel (fna Sun+sand) Southampton (v) |
50 | 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 | |
|
Corey Creek Vineyards Southold (t) |
75 | 1 | 0 | |
|
South Harbor Park Southold (t) |
50 | 0 | 0 | |
|
Sandy Hollow Day Camp Southampton (t) |
120 | 0 | 0 | |
|
Oysterpond Elementary School Southold (t) |
106 | 1 | 0 | |
|
Jefferson Temple Church of God in Christ Southold (t) |
100 | 0 | 0 | |
|
Pridwin Hotel Shelter Island (t) |
100 | 0 | 0 | |
|
Mill Creek Marina Southampton (t) |
100 | 0 | 0 | |
|
Atlantic Golf Club Southampton (t) |
100 | 0 | 0 | |
|
Kingdom Hall of Jehovah Witnesses |
500 | 0 | 0 |
About this data
Water systems are matched to Suffolk County, nearest to East Setauket 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.