Revised Total Coliform Rule (RTCR) violations in Connecticut
466 active public water systems in Connecticut had a Revised Total Coliform Rule (RTCR) violation in the past three years, 161 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Health effects: Total coliform bacteria indicate that the disinfection barrier has been breached or fecal contamination is entering the system. E. coli specifically indicates fecal contamination and the possible presence of disease-causing pathogens (norovirus, Salmonella, Shigella, Campylobacter). Illness can be severe in elderly, young children, and immunocompromised individuals.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Meriden Water Division Berlin, Cheshire, Meriden and 2 more · New Haven County |
58,441 | 4 | 0 | |
|
ST Lukes School New Canaan · Fairfield County |
405 | 3 | 2 | |
|
Camp Mattatuck Well #2 System Plymouth · Litchfield County |
350 | 1 | 1 | |
|
Brunswick School (upper Middle) Greenwich · Fairfield County |
295 | 3 | 0 | |
|
Hampton Elementary School Hampton · Windham County |
220 | 3 | 3 | |
|
732 Middlesex Turnpike Old Saybrook · Middlesex County |
200 | 1 | 1 | |
|
Tri-State Baptist Church Thompson · Windham County |
157 | 2 | 0 | |
|
Brookfield Hills Condominium Unit Owners Brookfield · Fairfield County |
144 | 3 | 1 | |
|
Ashford Hills Apartments Ashford · Windham County |
136 | 8 | 2 | |
|
The Wilton Riding Club, INC Wilton · Fairfield County |
125 | 2 | 1 | |
|
Church of Latter-Day Saints, Southbury Southbury · New Haven County |
121 | 2 | 2 | |
|
Juniper Club Inc. Bloomfield · Hartford County |
104 | 5 | 3 | |
|
Camp Asto Wamah Hungerford Columbia · Tolland County |
100 | 2 | 1 | |
|
Camp Asto Wamah Infirmary Columbia · Tolland County |
100 | 1 | 1 | |
|
Camp Asto Wamah Lodge Columbia · Tolland County |
100 | 2 | 1 | |
|
Church of the Nazarine Killingly · Windham County |
100 | 2 | 1 | |
|
Gibson Hill Park Sterling · Windham County |
100 | 3 | 1 | |
|
Powder Ridge Ski Lodge-Main Bldg Middlefield · Middlesex County |
100 | 1 | 0 | |
|
Solano Inn LLC Portland · Middlesex County |
96 | 3 | 1 | |
|
Contempo Kitchen & Bar New Milford · Litchfield County |
88 | 1 | 0 | |
|
Wolf Den State Park/campground Well Pomfret · Windham County |
83 | 2 | 1 | |
|
Isola Bella Youth Camp Salisbury · Litchfield County |
80 | 2 | 2 | |
|
Round Hill LLC Well# 1&2 Lisbon · New London County |
72 | 9 | 3 | |
|
Woodcreek Village Condominium Assn, INC Brookfield · Fairfield County |
72 | 5 | 1 | |
|
Cozy Hills Campground Well #4 Litchfield · Litchfield County |
70 | 2 | 1 | |
|
United Congregational Church Norwalk · Fairfield County |
61 | 3 | 2 | |
|
823 New Harwinton Road Torrington · Litchfield County |
60 | 3 | 1 | |
|
Rockrimmon Country Club Stamford · Fairfield County |
60 | 4 | 2 | |
|
Talcott Mountain Science Center #2 Avon · Hartford County |
59 | 6 | 2 | |
|
Mountain Laurel Plaza, Well 1 Bethel · Fairfield County |
55 | 2 | 0 | |
|
Salt Rock Campground Sprague · New London County |
54 | 2 | 1 | |
|
Sts Cyril&methodius Serbian Orth. Church Middlefield · Middlesex County |
53 | 5 | 1 | |
|
326 Route 87 Columbia Columbia · Tolland County |
50 | 2 | 0 | |
|
Mountain Laurel Plaza, Well 2 Bethel · Fairfield County |
50 | 2 | 1 | |
|
New Haven Sportsman's Club Inc. Guilford · New Haven County |
50 | 3 | 3 | |
|
Sun Valley Campground-System #1:well194 Stafford · Tolland County |
50 | 2 | 1 | |
|
The Lake Club, INC Wilton · Fairfield County |
50 | 1 | 0 | |
|
Roxbury Market Properties, LLC Roxbury · Litchfield County |
49 | 3 | 1 | |
|
Krauszers Derby · New Haven County |
48 | 2 | 0 | |
|
Sunset Apartments LLC Bolton · Tolland County |
46 | 6 | 2 | |
|
951 Danbury Road Wilton · Fairfield County |
45 | 2 | 1 | |
|
The Scotts-Hyponex Company-Main Plant Lebanon · New London County |
45 | 1 | 1 | |
|
Riverview Pizza Restaurant Plainfield · Windham County |
43 | 3 | 2 | |
|
381 Town Street East Haddam East Haddam · Middlesex County |
42 | 4 | 1 | |
|
Valley Presbyterian Church Brookfield · Fairfield County |
41 | 2 | 0 | |
|
Highland Greens (golfcourse Clubhouse) Prospect · New Haven County |
40 | 1 | 1 | |
|
Natra Properties, LLC Southington · Hartford County |
40 | 2 | 0 | |
|
Oakdale Manor Water Association Southbury · New Haven County |
40 | 5 | 2 | |
|
Prides Corner Jaderloon/propagation Lebanon · New London County |
40 | 3 | 2 | |
|
George Washington Plaza New Milford · Litchfield County |
39 | 3 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) 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.