Lead and Copper Rule Revisions (LCRR) violations in Connecticut
319 active public water systems in Connecticut had a Lead and Copper Rule Revisions (LCRR) violation in the past three years, 319 of them in the latest quarter of EPA's data. What Lead and Copper Rule Revisions (LCRR) is and why it matters.
Systems with a Lead and Copper Rule Revisions (LCRR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pleasant Valley Shopping Plaza Oxford · New Haven County |
89 | 2 | 1 | |
|
Hillandale Farm, Ct, LLC Bozrah · New London County |
88 | 2 | 2 | |
|
Montessori Discovery School Norwich · New London County |
88 | 1 | 1 | |
|
Mount Hope Montessori School Mansfield · Tolland County |
88 | 1 | 1 | |
|
Great Hill United Methodist Church Seymour · New Haven County |
85 | 3 | 0 | |
|
Thompson Hill Water CO Paula Lane Div Thompson · Windham County |
85 | 2 | 2 | |
|
Arrow Point Water CO Warren · Litchfield County |
84 | 1 | 1 | |
|
Crestview Condominium Association Cheshire · New Haven County |
84 | 6 | 3 | |
|
Deer Run Supply Montville · New London County |
84 | 2 | 1 | |
|
Evangelical Christian Center Main Ashford · Windham County |
84 | 5 | 2 | |
|
Northford Glen Condominium Association North Branford · New Haven County |
84 | 5 | 2 | |
|
Birch Mountain School Manchester · Hartford County |
83 | 2 | 1 | |
|
Aaron Manor Nursing & Rehab Center Chester · Middlesex County |
81 | 2 | 2 | |
|
1 Salmon Brook Street Granby · Hartford County |
80 | 3 | 2 | |
|
Coventry Kids Center Coventry · Tolland County |
80 | 1 | 1 | |
|
Lincoln Park Elderly Housing Preston · New London County |
80 | 1 | 1 | |
|
Northfield Commons Association Somers · Tolland County |
80 | 1 | 1 | |
|
Numa Tool CO INC Thompson · Windham County |
80 | 2 | 2 | |
|
Plaza Shopping Center Hebron · Tolland County |
80 | 1 | 1 | |
|
Sherman Green Marketplace Sherman · Fairfield County |
79 | 5 | 1 | |
|
6 Way Road Middlefield · Middlesex County |
78 | 2 | 1 | |
|
Kidds & Co., LLC North Stonington · New London County |
78 | 3 | 1 | |
|
Oak Grove Montessori School Mansfield · Tolland County |
77 | 1 | 1 | |
|
School Hill Association, Inc. East Windsor · Hartford County |
77 | 5 | 1 | |
|
Thompson Hill Water CO Beechwood Acres Montville · New London County |
77 | 3 | 1 | |
|
The Weston Field Club Well #2 Weston · Fairfield County |
75 | 8 | 2 | |
|
Essex Gardens Essex · Middlesex County |
72 | 3 | 2 | |
|
Lakeside Manor Apartments Montville · New London County |
72 | 2 | 1 | |
|
Round Hill LLC Well# 1&2 Lisbon · New London County |
72 | 9 | 3 | |
|
First Congregational Church of Lebanon Lebanon · New London County |
70 | 1 | 1 | |
|
Reynolds Subaru Lyme · New London County |
70 | 1 | 1 | |
|
Chaplin Woods Condominiums Chaplin · Windham County |
69 | 3 | 1 | |
|
Longview Estates, LLC Canterbury · Windham County |
69 | 2 | 1 | |
|
201 West High Street East Hampton · Middlesex County |
68 | 1 | 1 | |
|
Killingly Hwy Dept Garage Killingly · Windham County |
68 | 1 | 1 | |
|
Little People's Play Place Marlborough · Hartford County |
68 | 3 | 2 | |
|
Brooks Plaza East Hampton · Middlesex County |
67 | 2 | 2 | |
|
Country Manor Pomfret · Windham County |
66 | 3 | 3 | |
|
White Barn Children's Center Thompson · Windham County |
65 | 2 | 1 | |
|
Cradles to Crayons East Haddam · Middlesex County |
64 | 2 | 2 | |
|
Little Brook RD Property Owners Assn New Hartford · Litchfield County |
64 | 6 | 1 | |
|
Little Bears Adventure Center Portland · Middlesex County |
62 | 2 | 1 | |
|
Middlefield Housing Authority Middlefield · Middlesex County |
62 | 3 | 2 | |
|
The Learning Center, Inc. South Windsor · Hartford County |
61 | 4 | 2 | |
|
United Congregational Church Norwalk · Fairfield County |
61 | 3 | 2 | |
|
Conrads Park Killingly · Windham County |
60 | 5 | 3 | |
|
First Church of Round Hill Greenwich · Fairfield County |
60 | 2 | 1 | |
|
Foothills Shopping Plaza New Hartford · Litchfield County |
60 | 2 | 1 | |
|
Harris Brook Commons Salem · New London County |
60 | 1 | 1 | |
|
Mile Creek Apartments Old Lyme · New London County |
60 | 3 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved Lead and Copper Rule Revisions (LCRR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Lead and Copper Rule Revisions (LCRR) alone.
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.