Water quality in Water Mill, New York
Water Mill 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 |
|---|---|---|---|---|
| Hampton Bays Water District Southampton (t) |
12,500 | 0 | 9.6 mi | |
| West Neck Water District Shelter Island (t) |
100 | 0 | 10.0 mi | |
| Shelter Island Heights Association Shelter Island (t) |
500 | 2 | 10.1 mi | |
| Maidstone Park Cottages East Hampton (v) |
34 | 2 | 11.3 mi | |
| Dering Harbor Water District Shelter Island (t) |
14 | 0 | 12.2 mi | |
| Greenport Water District Southold (t) |
2,050 | 1 | 13.1 mi | |
| Fishers Island Water Works Southold (t) |
380 | 1 | 15.3 mi | |
| Calverton Hills Owners Association Brookhaven (t) |
897 | 2 | 16.0 mi | |
| Peconic River Mobile Home Park Riverhead (t) |
75 | 0 | 17.0 mi | |
| Peconic View Mobile Home Park Riverhead (t) |
40 | 0 | 18.7 mi | |
| Riverhead Water District Riverhead (t) |
35,000 | 1 | 19.2 mi | |
| Riverside Water District Southampton (v) |
2,050 | 0 | 24.2 mi | |
| Brookhaven National Laboratory Brookhaven (t) |
3,500 | 0 | 27.2 mi | |
| Seaview Water Company Brookhaven (t) |
1,400 | 0 | 30.8 mi | |
| ST James Water District Smithtown (t) |
10,587 | 0 | 41.8 mi | |
| Smithtown Water District Smithtown (t) |
19,635 | 0 | 45.7 mi | |
| Ocean Beach Water District Islip (t) |
4,500 | 0 | 46.3 mi | |
| Saltaire Water District Islip (t) |
2,000 | 0 | 48.0 mi | |
| Greenlawn Water District Huntington (t) |
42,000 | 3 | 52.2 mi | |
| Dix Hills Water District Huntington (t) |
34,522 | 1 | 52.7 mi | |
| Oak Beach Public Water Supply Babylon (t) |
66 | 1 | 53.1 mi | |
| Robert Moses State Park Babylon (t) |
11,600 | 0 | 53.4 mi | |
| Northport VA Hospital Huntington (t) |
3,088 | 1 | 55.2 mi | |
| South Huntington Water District Huntington (t) |
81,760 | 1 | 56.2 mi | |
| West Gilgo Beach Association Babylon (t) |
300 | 0 | 59.9 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 |
|---|---|---|---|---|
|
Kingdom Hall of Jehovah Witnesses |
500 | 0 | 0 | |
|
Atlantic Golf Club Southampton (t) |
100 | 0 | 0 | |
|
Sandy Hollow Day Camp Southampton (t) |
120 | 0 | 0 | |
|
Wolffer Estate Vineyard Southampton (t) |
50 | 0 | 0 | |
|
Old Stove Pub Southampton (t) |
150 | 1 | 0 | |
|
Mill Creek Marina Southampton (t) |
100 | 0 | 0 | |
|
Townline Bbq East Hampton (t) |
150 | 0 | 0 | |
|
LA Capannina Southampton (t) |
100 | 0 | 0 | |
|
Wolffer Estates Stables Southampton (t) |
45 | 1 | 0 | |
|
Speedway #7794 (fna Hess General Store) East Hampton (t) |
200 | 0 | 0 | |
|
Sag Harbor State Golf Course Southampton (t) |
200 | 0 | 0 | |
|
Sea Haven Resort Motel (fna Sun+sand) Southampton (v) |
50 | 0 | 0 | |
|
Buckskill Tennis Club East Hampton (v) |
60 | 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 | |
|
Long House Reserve East Hampton (t) |
50 | 0 | 0 | |
|
Wades Beach Shelter Island (t) |
75 | 0 | 0 | |
|
Maidstone Gun Club East Hampton (t) |
100 | 0 | 0 | |
|
Island Boatyard & Marina Shelter Island (t) |
100 | 0 | 0 | |
|
South Harbor Park Southold (t) |
50 | 0 | 0 | |
|
LA Antigua Southold (t) |
150 | 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 | |
|
Pugliese Vineyards Southold (t) |
50 | 1 | 0 | |
|
Corey Creek Vineyards Southold (t) |
75 | 1 | 0 | |
|
Mashomack Pres. Visitor Ctr. Shelter Island (t) |
50 | 0 | 0 | |
|
Shelter Island Senior Citizens Center Shelter Island (t) |
35 | 0 | 0 | |
|
Lenz Winery Southold (t) |
50 | 2 | 0 | |
|
McCall Farm Winery Southold (t) |
40 | 0 | 0 | |
|
Vine Street Cafe Shelter Island (t) |
80 | 0 | 0 | |
|
Ellis Country Market Shelter Island (t) |
50 | 0 | 0 | |
|
Shelter Island School Shelter Island (t) |
315 | 1 | 0 | |
|
Camp Quinipet Shelter Island (t) |
150 | 0 | 0 | |
|
American Legion Post #281 Shelter Island (t) |
100 | 0 | 0 | |
|
Kyles (previously Cafe 27) Shelter Island (t) |
150 | 0 | 0 | |
|
All Seasons Catering Shelter Island (t) |
50 | 0 | 0 | |
|
Shelter Island Nutrition Program Shelter Island (t) |
75 | 0 | 0 | |
|
Shelter Island Library |
258 | 0 | 0 | |
|
Shelter Island Town Hall Shelter Island (t) |
50 | 0 | 0 | |
|
Maidstone Market East Hampton (t) |
100 | 0 | 0 | |
|
Pridwin Hotel Shelter Island (t) |
100 | 0 | 0 | |
|
Swans Marina East Hampton (v) |
200 | 0 | 0 | |
|
Marias Kitchen Shelter Island (t) |
25 | 0 | 0 | |
|
Cards Cottages Shelter Island (t) |
60 | 0 | 0 | |
|
BP Mart Peconic Southold (t) |
100 | 1 | 0 |
About this data
Water systems are matched to Suffolk County, nearest to Water Mill 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. Retrieved from ECHO on Oct 11, 2026.