New York
Jefferson County drinking water quality
156 active public water systems serve 130,530 people in Jefferson County. 119 are compliant, 37 had at least one EPA violation in the past three years, 0 are designated serious violators, and 2 carry a health flag.
Active systems
156
57 community systems
People served
131K
by public water systems
Systems with violations
37
24% of active systems, past 3 years
Serious violators
0
2 systems carry a health flag
Needs attention
Philadelphia Village
NY2202341 · Philadelphia (v) · Community water system · Serves 1,800
1 rule violated in the past three years. Unresolved: Surface Water Treatment Rule (SWTR).
Wellesley Island Water Corp.
NY2220914 · Alexandria (t) · Community water system · Serves 548
2 rules violated in the past three years. Unresolved: Surface Water Treatment Rule (SWTR).
Community water systems
57 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Fort Drum Leray (t) |
34,000 | 0 | 0 | |
|
Watertown City Watertown (c) |
27,861 | 1 | 0 | |
|
Leray Town WD 1, 2, 4 Leray (t) |
7,140 | 0 | 0 | |
|
Carthage Village Carthage (v) |
3,600 | 1 | 0 | |
|
Cape Vincent Town WD 1 & 5 Cape Vincent (t) |
2,600 | 0 | 0 | |
|
Sackets Harbor Village Sackets Harbor (v) |
2,200 | 0 | 0 | |
|
Clayton Village Clayton (v) |
2,100 | 0 | 0 | |
|
Adams Village Adams (t) |
2,000 | 0 | 0 | |
|
Alexandria Bay Village Alexandria Bay (v) |
1,900 | 0 | 0 | |
|
Pamelia Town WD 4 & 5 Pamelia (t) |
1,857 | 0 | 0 | |
|
Philadelphia Village Philadelphia (v) |
1,800 | 1 | 1 | |
|
West Carthage Village West Carthage (v) |
1,734 | 0 | 0 | |
|
Black River Village Black River (v) |
1,600 | 0 | 0 | |
|
Cape Vincent Village Cape Vincent (v) |
1,500 | 0 | 0 | |
|
Ellisburg WD 1, 2 & 3 Ellisburg (t) |
1,500 | 0 | 0 | |
|
Rutland Town WD 1 |
1,500 | 0 | 0 | |
|
Brownville Village Brownville (v) |
1,200 | 0 | 0 | |
|
Dexter Village Dexter (v) |
1,100 | 0 | 0 | |
|
Adams T WD 1,2,3 (adams Center) Adams (t) |
1,000 | 0 | 0 | |
|
Theresa Village Theresa (v) |
950 | 0 | 0 | |
|
Antwerp Village Antwerp (v) |
900 | 0 | 0 | |
|
Cape Vincent Town WD 3, 4, & 6 |
770 | 0 | 0 | |
|
Orleans Town WD 1 (lafargeville) Orleans (t) |
750 | 0 | 0 | |
|
Watertown Town WD 3 & 4 & 5 Watertown (t) |
750 | 0 | 0 | |
|
Hounsfield WD 2 Hounsfield (t) |
725 | 1 | 0 | |
|
Henderson Town WD 1,2 Henderson (t) |
700 | 1 | 0 | |
|
Orleans Town WD 2 (rt 12) Orleans (t) |
690 | 0 | 0 | |
|
Champion WD 2, 4 & 5 Champion (t) |
650 | 0 | 0 | |
|
Evans Mills Village Evans Mills (v) |
644 | 0 | 0 | |
|
Chaumont Village Chaumont (v) |
625 | 0 | 0 | |
|
Brownville (t) WD #1 Brownville (t) |
600 | 0 | 0 | |
|
Watertown Town WD 1 & 2 Watertown (t) |
600 | 0 | 0 | |
|
Wellesley Island Water Corp. Alexandria (t) |
548 | 2 | 1 | |
|
Northland Estates Watertown (t) |
540 | 0 | 0 | |
|
Alexandria Town WD #2 Redwood |
500 | 0 | 0 | |
|
Glen Park Village Glen Park (v) |
500 | 0 | 0 | |
|
Hounsfield WD 1, 5 Hounsfield (t) |
480 | 1 | 0 | |
|
Leray Town WD 3 |
480 | 0 | 0 | |
|
Mannsville Village Mannsville (v) |
450 | 0 | 0 | |
|
Deferiet Village Deferiet (v) |
420 | 0 | 0 | |
|
Champion WD 1 (great Bend) Champion (t) |
400 | 0 | 0 | |
|
Lyme Town WD 2 Lyme (t) |
400 | 0 | 0 | |
|
Northwoods Estates Leray (t) |
315 | 0 | 0 | |
|
Indian River Estates, Ltd. Theresa (t) |
303 | 1 | 1 | |
|
Hounsfield WD 3 (wescott Beach) Hounsfield (t) |
270 | 1 | 0 | |
|
Wilna T WD 1 Wilna (t) |
240 | 1 | 0 | |
|
Wilna T WD 2 Wilna (t) |
200 | 0 | 0 | |
|
Southside Water Inc. Watertown (t) |
195 | 0 | 0 | |
|
Rodman Town WD 1 Rodman (t) |
180 | 1 | 0 | |
|
Pamelia Town WD #2 Pamelia (t) |
150 | 0 | 0 |
Non-community systems (99: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Can-Am Speedway Orleans (t) |
2,000 | 1 | 0 | |
|
Stone Mills Museum Orleans (t) |
1,500 | 1 | 0 | |
|
Tiba Boldt Castle Alexandria Bay (v) |
1,000 | 1 | 0 | |
|
Wellesley Island State Park Alexandria Bay (v) |
1,000 | 1 | 0 | |
|
Thousand Island Park Corp. Orleans (t) |
900 | 0 | 0 | |
|
Kring Point State Park Alexandria (t) |
600 | 1 | 0 | |
|
Southwick Beach State Park Ellisburg (t) |
520 | 0 | 0 | |
|
Creekstone Farms Adams (t) |
400 | 2 | 0 | |
|
Wilsons Hyde Lake Campsites Theresa (t) |
375 | 0 | 0 | |
|
Long Point State Park Jefferson Cty Lyme (t) |
360 | 0 | 0 | |
|
Association Island R.v. Resort &marina Henderson (t) |
307 | 0 | 0 | |
|
Black River Bay Campground Hounsfield (t) |
300 | 0 | 0 | |
|
Krings Trailer Park Alexandria (t) |
300 | 1 | 0 | |
|
Riverside Acres Clayton (t) |
300 | 0 | 0 | |
|
Tiba Yacht House Alexandria (t) |
211 | 0 | 0 | |
|
Birch Haven Campground Clayton (t) |
200 | 1 | 1 | |
|
Natalis Restaurant Clayton (t) |
200 | 0 | 0 | |
|
Pinehurst on the St. Lawrence Alexandria (t) |
200 | 0 | 0 | |
|
Whistle Stop Tavern Champion (t) |
200 | 2 | 0 | |
|
Cold Springs Golf Course Mannsville (v) |
195 | 0 | 0 | |
|
4-H Camp Wabasso Theresa (t) |
175 | 0 | 0 | |
|
Canoe-Picnic Point State Park Alexandria Bay (v) |
175 | 0 | 0 | |
|
Brennans Bay Campground and Marina Ellisburg (t) |
164 | 0 | 0 | |
|
C-Way Motel & Resort Clayton (t) |
160 | 0 | 0 | |
|
Meadowlane Park Alexandria (t) |
160 | 0 | 0 | |
|
Northernaire Park Alexandria (t) |
160 | 0 | 0 | |
|
Crystal Lake Campground Theresa (t) |
150 | 0 | 0 | |
|
Sargents on Swan Bay/kountry Kottage Alexandria (t) |
150 | 0 | 0 | |
|
Shangri-La Campground Lyme (t) |
150 | 0 | 0 | |
|
Lanzs Motel Inc. Clayton (t) |
148 | 0 | 0 | |
|
Pines Trailer Park Alexandria (t) |
136 | 0 | 0 | |
|
Roosevelt Trailer Park/cot. Clayton (t) |
132 | 0 | 0 | |
|
Cals Cottages Clayton (t) |
130 | 0 | 0 | |
|
Wagoners Marina & Trailer Prk Alexandria (t) |
125 | 1 | 0 | |
|
Barton & Healys Cottgs/trlprk Alexandria (t) |
120 | 0 | 0 | |
|
Theresa Bowling Center Theresa (t) |
100 | 1 | 0 | |
|
Wayside Inn Jefferson Cty Ellisburg (t) |
90 | 0 | 0 | |
|
Willows on the Lake Henderson (t) |
90 | 0 | 0 | |
|
Merry Knoll Travel Trailer Pk. Clayton (t) |
85 | 0 | 0 | |
|
Sportsmans Hideaway Lyme (t) |
80 | 0 | 0 | |
|
UP the Creek Campground Ellisburg (t) |
80 | 0 | 0 | |
|
Mils Rivershore Cottgs/motel Clayton (t) |
75 | 0 | 0 | |
|
Thousand Island Trailer Park Clayton (t) |
70 | 0 | 0 | |
|
Tricias Rondette Restaurant Clayton (t) |
70 | 0 | 0 | |
|
Fair Wind Lodge Clayton (t) |
60 | 1 | 0 | |
|
Guffin Bay Resort & Marina Lyme (t) |
60 | 0 | 0 | |
|
Ponds Marina & Trailer Park Cape Vincent (t) |
60 | 1 | 0 | |
|
Steiners General Store Watertown (t) |
60 | 0 | 0 | |
|
Swan Bay Estates & Marina Ltd. Alexandria (t) |
54 | 0 | 0 | |
|
7 Acres Trailer Park Orleans (t) |
50 | 0 | 0 | |
|
Birdie Bites/la Golf Orleans (t) |
50 | 0 | 0 | |
|
Dry Hill Ski Area Watertown (t) |
50 | 1 | 0 | |
|
Flying Spatula 1 Orleans (t) |
50 | 0 | 0 | |
|
Hidden Harbor Lyme (t) |
50 | 0 | 0 | |
|
Lawrence View Park Clayton (t) |
50 | 0 | 0 | |
|
Mary Island State Park Alexandria Bay (v) |
50 | 0 | 0 | |
|
Shady Pines Henderson (t) |
50 | 1 | 0 | |
|
Two Sisters Diner Theresa (t) |
50 | 0 | 0 | |
|
West Winds Motel/cottages |
50 | 0 | 0 | |
|
Bay Vue Park Alexandria (t) |
48 | 0 | 0 | |
|
Credo Community Center Pamelia (t) |
45 | 0 | 0 | |
|
Lyellton Drive Clayton (t) |
45 | 0 | 0 | |
|
Rainbow Shore Trailer Park Clayton (t) |
44 | 0 | 0 | |
|
Arrowhead Trailer Park Alexandria (t) |
42 | 0 | 0 | |
|
Genes Fishing Camp Theresa (t) |
40 | 0 | 0 | |
|
Hoopers Harbor, LLC Lyme (t) |
40 | 0 | 0 | |
|
Ontario Shores T/p & Marina Cape Vincent (t) |
39 | 0 | 0 | |
|
Boathouse Marine Clayton (t) |
34 | 0 | 0 | |
|
Depauville Hotel Clayton (t) |
30 | 2 | 0 | |
|
Dewolf Point State Park Orleans (t) |
30 | 0 | 0 | |
|
Hi-Da-Way Cottages Alexandria (t) |
30 | 0 | 0 | |
|
Mars Pizza Clayton (t) |
30 | 0 | 0 | |
|
Twisted Theresa (t) |
30 | 1 | 0 | |
|
US Coast Guard Wellesley Island |
29 | 0 | 0 | |
|
Hunney Bee Bakery Theresa (t) |
26 | 0 | 0 | |
|
Land of Lakes Shoppette & Gas Theresa (t) |
26 | 0 | 0 | |
|
Northbound Comfort Station Alexandria (t) |
26 | 1 | 0 | |
|
Southbound Comfort Station Watertown (t) |
26 | 1 | 0 | |
|
Wehle State Park Henderson (t) |
26 | 0 | 0 | |
|
Aujla Corner Watertown (t) |
25 | 1 | 0 | |
|
Bassetts Captain Clayton Clayton (t) |
25 | 0 | 0 | |
|
Burrville Cider Mill Watertown (t) |
25 | 0 | 0 | |
|
Chaumont River RV Park Lyme (t) |
25 | 1 | 0 | |
|
Clayton Distillery Clayton (t) |
25 | 0 | 0 | |
|
Dollar General (theresa) Theresa (t) |
25 | 1 | 0 | |
|
Harbors End, Inc. Henderson (t) |
25 | 0 | 0 | |
|
Hillbilly Inn Champion (t) |
25 | 2 | 0 | |
|
Keithas Kafe Lorraine (t) |
25 | 0 | 0 | |
|
North Country Store Philadelphia (t) |
25 | 0 | 0 | |
|
Nut N Fanci Orleans (t) |
25 | 0 | 0 | |
|
River Golf Adventures Clayton (t) |
25 | 0 | 0 | |
|
Rock Island Lighthouse State Park Orleans (t) |
25 | 0 | 0 | |
|
Sls on the River LLC Dba Chateau Clayton (t) |
25 | 2 | 0 | |
|
Southwicks General Store Ellisburg (t) |
25 | 0 | 0 | |
|
Stewarts Shop 441 Watertown (t) |
25 | 1 | 0 | |
|
Tiba -U.s. Customs Alexander (t) |
25 | 0 | 0 | |
|
Wellesley Island Market Orleans (t) |
25 | 0 | 0 | |
|
Whitecaps Market Clayton (t) |
25 | 0 | 0 | |
|
Wright Diner (the) Clayton (t) |
25 | 0 | 0 |
Inactive systems (193, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.