All water systems in Connecticut
2,334 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Eastford Elementary School Eastford · Windham County |
225 | 1 | 1 | |
|
Kingdom Hall of Jehovahs Witnesses North Stonington · New London County |
225 | 0 | 0 | |
|
Mystic Business Park, LLC Groton · New London County |
225 | 1 | 1 | |
|
Westchester Hills Condominium Assn. Colchester · New London County |
225 | 1 | 0 | |
|
Blue Trails Water Association Durham, North Branford · New Haven County |
224 | 4 | 2 | |
|
Colchester Commons Colchester · New London County |
224 | 2 | 1 | |
|
Manchester Cong. of Jehovahs Witnesses Manchester · Hartford County |
222 | 0 | 0 | |
|
Ctwc London Park Division Hebron · Tolland County |
221 | 0 | 0 | |
|
Church of Latter-Day Saints, Woodbridge Woodbridge · New Haven County |
220 | 0 | 0 | |
|
Hampton Elementary School Hampton · Windham County |
220 | 3 | 3 | |
|
The Marvelwood School Kent · Litchfield County |
220 | 0 | 0 | |
|
Aquarion-Judea Main Washington · Litchfield County |
219 | 0 | 0 | |
|
Countryside Apartments Wolcott · New Haven County |
218 | 0 | 0 | |
|
Mansfield Library Buchanan Center Mansfield · Tolland County |
217 | 0 | 0 | |
|
Ctwc Sdc Water Voluntown · New London County |
216 | 0 | 0 | |
|
Ctwc Shoreline Reg-Chester Vllg West Chester · Middlesex County |
216 | 0 | 0 | |
|
Woodland Summit Community Water Assn Tolland · Tolland County |
216 | 0 | 0 | |
|
Aquarion-Clearview Hills Wolcott · New Haven County |
215 | 0 | 0 | |
|
Cannabis Retailer at 195 Albany Turnpike Canton · Hartford County |
214 | 3 | 1 | |
|
Heritage Cove Condominiums Essex · Middlesex County |
208 | 0 | 0 | |
|
Old Newgate Ridge Water Company INC East Granby · Hartford County |
208 | 3 | 3 | |
|
Peake Brook LLC Woodstock · Windham County |
208 | 1 | 1 | |
|
Ivy Woods Tolland · Tolland County |
207 | 2 | 1 | |
|
Winding Trails Recreation Assn Lower Farmington · Hartford County |
207 | 0 | 0 | |
|
Winding Trails Recreation Assn Upper Farmington · Hartford County |
207 | 0 | 0 | |
|
Goshen Center School/town Bldgs Goshen · Litchfield County |
205 | 0 | 0 | |
|
Kingdom of the Hawk North Stonington · New London County |
205 | 0 | 0 | |
|
Lyme Consolidated School Lyme · New London County |
205 | 0 | 0 | |
|
Quinebaug Mobile Home Park Thompson · Windham County |
205 | 2 | 1 | |
|
Tolland Water Dept Torry Road Tolland · Tolland County |
204 | 2 | 0 | |
|
1657 Boston Turnpike Coventry Coventry · Tolland County |
203 | 3 | 0 | |
|
Ctwc Baker Hill Division East Hampton · Middlesex County |
203 | 0 | 0 | |
|
Congregation Adath Israel Newtown · Fairfield County |
202 | 1 | 0 | |
|
Cornwall Consolidated School Cornwall · Litchfield County |
202 | 4 | 0 | |
|
732 Middlesex Turnpike Old Saybrook · Middlesex County |
200 | 1 | 1 | |
|
Aquarion-Hollandale Estates Danbury · Fairfield County |
200 | 0 | 0 | |
|
Fed EX Ground Willington · Tolland County |
200 | 0 | 0 | |
|
Hobson Motzer, Inc. Durham · Middlesex County |
200 | 0 | 0 | |
|
Housatonic Valley Waldorf School White Newtown · Fairfield County |
200 | 0 | 0 | |
|
Laticrete International Bethany · New Haven County |
200 | 2 | 1 | |
|
Salem Marketplace Salem · New London County |
200 | 2 | 1 | |
|
Scotland Elementary School Scotland · Windham County |
200 | 1 | 1 | |
|
Squantz Pond S.p./main Well New Fairfield · Fairfield County |
200 | 0 | 0 | |
|
St. Dimitrie Romanian Orthodox Church Easton · Fairfield County |
200 | 1 | 1 | |
|
Stanwich Congregational Church Greenwich · Fairfield County |
200 | 1 | 0 | |
|
Town of New Hartford Brown's Corner New Hartford · Litchfield County |
200 | 2 | 1 | |
|
The Independent Day School Middlefield · Middlesex County |
199 | 0 | 0 | |
|
Carriage House Apartments Mansfield · Tolland County |
196 | 0 | 0 | |
|
Cornerstone of Columbia Columbia · Tolland County |
193 | 0 | 0 | |
|
Ctwc Northern Reg-Llynwood System Bolton, Vernon · Tolland County |
192 | 0 | 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.