All water systems in Connecticut
2,334 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Gqc Well Commission East Granby · Hartford County |
360 | 3 | 2 | |
|
The Country School (main Building) Madison · New Haven County |
360 | 0 | 0 | |
|
Turkey Hill of East Granby, LLC East Granby · Hartford County |
360 | 4 | 1 | |
|
Kelly Lane Primary School Granby · Hartford County |
357 | 0 | 0 | |
|
Knollcrest Tax District New Fairfield · Fairfield County |
356 | 5 | 1 | |
|
Hazardville Rye Hill System Somers · Tolland County |
352 | 0 | 0 | |
|
Camp Mattatuck Well #2 System Plymouth · Litchfield County |
350 | 1 | 1 | |
|
Canterbury Elementary School Canterbury · Windham County |
350 | 1 | 0 | |
|
Washington Montessori School Washington · Litchfield County |
350 | 1 | 1 | |
|
Whitby School Greenwich · Fairfield County |
350 | 2 | 1 | |
|
Camp Woodstock Upper Main Camp Woodstock · Windham County |
346 | 0 | 0 | |
|
Hole in the Wall Gang Camp-Main System#1 Ashford · Windham County |
335 | 0 | 0 | |
|
Newington VA Medical Center-Building 2e Newington · Hartford County |
335 | 1 | 0 | |
|
Ctwc Ashford Park Division Ashford · Windham County |
334 | 0 | 0 | |
|
Meriden Care Center Llc-Silver Springs Meriden · New Haven County |
334 | 0 | 0 | |
|
Aquarion-Pleasure Valley Norwich · New London County |
328 | 0 | 0 | |
|
East Hampton Wpca Royal Oaks System East Hampton · Middlesex County |
328 | 4 | 0 | |
|
Willington Senior Center & Housing Willington · Tolland County |
327 | 0 | 0 | |
|
Ethel Walker School Simsbury · Hartford County |
325 | 3 | 1 | |
|
Aquarion-Carmen Hill New Milford · Litchfield County |
322 | 2 | 2 | |
|
Camp Woodstock New Dining Well Woodstock · Windham County |
322 | 0 | 0 | |
|
Jewett City Water Co., S & W System Griswold · New London County |
320 | 0 | 0 | |
|
Camp Connri Ashford · Windham County |
319 | 0 | 0 | |
|
Classee Water System Latimer Point Stonington · New London County |
316 | 1 | 0 | |
|
Killingworth Elementary School Killingworth · Middlesex County |
315 | 0 | 0 | |
|
Candlewood Trails Association, Inc. New Milford · Litchfield County |
312 | 4 | 0 | |
|
Knollwood Apartments Mansfield · Tolland County |
312 | 1 | 1 | |
|
Wyndham Park Apartments Windham · Windham County |
312 | 0 | 0 | |
|
Aquarion-Timber Trails New Fairfield, Sherman · Fairfield County |
310 | 0 | 0 | |
|
Dr. Helen Baldwin School Canterbury · Windham County |
310 | 0 | 0 | |
|
Pachaug Marina Campground Griswold · New London County |
310 | 0 | 0 | |
|
Sterling Water System Sterling · Windham County |
308 | 2 | 1 | |
|
Aquarion-Possum Ridge New Fairfield · Fairfield County |
307 | 0 | 0 | |
|
Ctwc General Water Division Coventry · Tolland County |
306 | 0 | 0 | |
|
Church of Christ the King Old Lyme · New London County |
305 | 0 | 0 | |
|
Bolton High School Bolton · Tolland County |
304 | 1 | 1 | |
|
Sunny Waters Mobile Home Park Norwich · New London County |
303 | 0 | 0 | |
|
Meadows Apartments Montville · New London County |
301 | 0 | 0 | |
|
Birch Groves Association, INC New Milford · Litchfield County |
300 | 3 | 2 | |
|
Deep River Farms Deep River · Middlesex County |
300 | 1 | 0 | |
|
Deer Lake Outdoor Center Dining Well 2 Killingworth · Middlesex County |
300 | 0 | 0 | |
|
Edmund D. Strang Scout Reservation Goshen · Litchfield County |
300 | 0 | 0 | |
|
Franklin Elementary School Franklin · New London County |
300 | 2 | 1 | |
|
Hartland Elem Sch & Town Bldgs Hartland · Hartford County |
300 | 0 | 0 | |
|
Justice Education Center Camp Inspire Coventry · Tolland County |
300 | 0 | 0 | |
|
Lake Warramaug/campground Well Kent · Litchfield County |
300 | 0 | 0 | |
|
Lake Warramaug/day Use Well Kent · Litchfield County |
300 | 0 | 0 | |
|
Lyme Academy of Fine Arts Old Lyme · New London County |
300 | 1 | 1 | |
|
Scwa, Barrett Division (bar) Ledyard · New London County |
300 | 0 | 0 | |
|
The Frederick Gunn School, Inc. Washington · Litchfield County |
300 | 3 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
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 Connecticut 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.