Water quality in Middle Island, New York
Middle Island 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 |
|---|---|---|---|---|
| Brookhaven National Laboratory Brookhaven (t) |
3,500 | 0 | 4.7 mi | |
| Riverside Water District Southampton (v) |
2,050 | 0 | 7.6 mi | |
| Seaview Water Company Brookhaven (t) |
1,400 | 0 | 8.3 mi | |
| ST James Water District Smithtown (t) |
10,587 | 0 | 10.4 mi | |
| Riverhead Water District Riverhead (t) |
35,000 | 1 | 12.7 mi | |
| Peconic View Mobile Home Park Riverhead (t) |
40 | 0 | 12.7 mi | |
| Smithtown Water District Smithtown (t) |
19,635 | 0 | 14.3 mi | |
| Peconic River Mobile Home Park Riverhead (t) |
75 | 0 | 14.4 mi | |
| Calverton Hills Owners Association Brookhaven (t) |
897 | 2 | 15.4 mi | |
| Ocean Beach Water District Islip (t) |
4,500 | 0 | 20.1 mi | |
| Greenlawn Water District Huntington (t) |
42,000 | 3 | 20.8 mi | |
| Saltaire Water District Islip (t) |
2,000 | 0 | 20.8 mi | |
| Dix Hills Water District Huntington (t) |
34,522 | 1 | 21.6 mi | |
| Hampton Bays Water District Southampton (t) |
12,500 | 0 | 22.3 mi | |
| Northport VA Hospital Huntington (t) |
3,088 | 1 | 23.8 mi | |
| Robert Moses State Park Babylon (t) |
11,600 | 0 | 23.9 mi | |
| South Huntington Water District Huntington (t) |
81,760 | 1 | 24.9 mi | |
| Oak Beach Public Water Supply Babylon (t) |
66 | 1 | 25.4 mi | |
| West Gilgo Beach Association Babylon (t) |
300 | 0 | 31.2 mi | |
| West Neck Water District Shelter Island (t) |
100 | 0 | 33.8 mi | |
| Greenport Water District Southold (t) |
2,050 | 1 | 34.2 mi | |
| Shelter Island Heights Association Shelter Island (t) |
500 | 2 | 34.2 mi | |
| Fishers Island Water Works Southold (t) |
380 | 1 | 38.0 mi | |
| Dering Harbor Water District Shelter Island (t) |
14 | 0 | 40.7 mi | |
| Maidstone Park Cottages East Hampton (v) |
34 | 2 | 41.5 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 |
|---|---|---|---|---|
|
Oldcastle Infrastructure Brookhaven (t) |
40 | 0 | 0 | |
|
First Student-Middle Island(was Laidlaw) Brookhaven (t) |
125 | 0 | 0 | |
|
BP Gas-Ridge Brookhaven (t) |
75 | 0 | 0 | |
|
Caribbean Spot Brookhaven (t) |
200 | 0 | 0 | |
|
555 Professional Bldg. Brookhaven (t) |
30 | 0 | 0 | |
|
Shell Station Yaphank |
100 | 1 | 0 | |
|
North Shore Office Building Brookhaven (t) |
50 | 0 | 0 | |
|
Joes Kwik Mart Brookhaven (t) |
200 | 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 | |
|
YMCA Brookhaven Roe Brookhaven (t) |
100 | 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 | |
|
Rock Hill Country Club Brookhaven (t) |
150 | 0 | 0 | |
|
East Moriches Primary Care |
500 | 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 | |
|
Coastal Pipeline Corp. Riverhead (t) |
30 | 0 | 0 | |
|
Bellport Village Beach Brookhaven (t) |
50 | 0 | 0 | |
|
Great Gun Beach Brookhaven (t) |
100 | 1 | 0 | |
|
Hampton Hills Golf Club Southampton (t) |
150 | 0 | 0 | |
|
Kings Park Launch Ramp Smithtown (t) |
100 | 0 | 0 | |
|
D. S. Shanahans Smithtown (t) |
150 | 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 | |
|
Captree State Park Babylon (t) |
4,100 | 0 | 0 | |
|
Cedar Beach Sportfishing Educ. Center Babylon (t) |
200 | 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 | |
|
Overlook Beach Babylon (t) |
450 | 0 | 0 | |
|
Cedar Beach (golf Course/concession) Babylon (t) |
500 | 0 | 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 | |
|
Gilgo Beach Babylon (t) |
500 | 0 | 0 | |
|
Kingdom Hall of Jehovah Witnesses |
500 | 0 | 0 | |
|
Mill Creek Marina Southampton (t) |
100 | 0 | 0 | |
|
Atlantic Golf Club Southampton (t) |
100 | 0 | 0 | |
|
Pridwin Hotel Shelter Island (t) |
100 | 0 | 0 |
About this data
Water systems are matched to Suffolk County, nearest to Middle Island 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.