Nitrate violations in Connecticut
130 active public water systems in Connecticut had a Nitrate violation in the past three years, 8 of them in the latest quarter of EPA's data. What Nitrate is and why it matters.
Health effects: Methemoglobinemia in infants under 6 months: gut bacteria convert nitrate to nitrite, which blocks oxygen transport in blood. Pregnant women should also take precautions. Chronic adult exposure at elevated levels may increase cancer risk.
Systems with a Nitrate violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Middlesex Hospital Phys Rehab&occup. Med Essex · Middlesex County |
40 | 2 | 0 | |
|
Vitale Aquatic & Tennis Ledyard · New London County |
40 | 2 | 0 | |
|
Stonington Institute Infirmary North Stonington · New London County |
39 | 1 | 0 | |
|
DW Transport & Leasing, Inc. Franklin · New London County |
38 | 2 | 0 | |
|
44 Stony Hill Road Bethel · Fairfield County |
37 | 2 | 0 | |
|
10-16 Putnam Road Plainfield · Windham County |
36 | 3 | 1 | |
|
292 Candlewood Lake RD Brookfield · Fairfield County |
35 | 2 | 0 | |
|
849 Federal Road Brookfield · Fairfield County |
34 | 2 | 0 | |
|
Giv Coffee Roastery and Cafe Canton · Hartford County |
34 | 1 | 0 | |
|
Killingly Professional Building Killingly · Windham County |
33 | 2 | 0 | |
|
Oakridge Village Montville · New London County |
33 | 5 | 1 | |
|
255 Route 80 Killingworth Killingworth · Middlesex County |
32 | 4 | 1 | |
|
Perry Plaza Southington · Hartford County |
32 | 2 | 1 | |
|
Middlesex Hospital Medical Facility East Haddam · Middlesex County |
31 | 4 | 1 | |
|
119 Amity Road Bethany · New Haven County |
30 | 2 | 0 | |
|
40 William F. Palmer RD East Haddam · Middlesex County |
30 | 3 | 0 | |
|
Alcove Motel New Hartford · Litchfield County |
30 | 4 | 1 | |
|
Country Farms Plainfield · Windham County |
30 | 2 | 0 | |
|
Julien's Farm Store Granby · Hartford County |
30 | 1 | 0 | |
|
Red Fox Marketplace and Panini Grill Middlefield · Middlesex County |
30 | 3 | 1 | |
|
108 Main Street Middlefield · Middlesex County |
29 | 2 | 0 | |
|
Donut Twist LLC Marlborough · Hartford County |
29 | 2 | 1 | |
|
Windsorville Water Association East Windsor · Hartford County |
29 | 8 | 1 | |
|
Lake Road Plaza Bozrah · New London County |
28 | 3 | 1 | |
|
Mountain Dairy Creamery Mansfield · Tolland County |
28 | 3 | 1 | |
|
The Vineyard at Hillyland Scotland · Windham County |
28 | 2 | 0 | |
|
East Granby Farms East Granby · Hartford County |
27 | 2 | 1 | |
|
2088 Hebron Ave. Chestnut Market Glastonbury · Hartford County |
27 | 3 | 0 | |
|
109 Federal Road Danbury · Fairfield County |
25 | 2 | 0 | |
|
1217 Queen ST Southington · Hartford County |
25 | 3 | 0 | |
|
1273 Wolcott Road (wolcott Inn & Suites) Wolcott · New Haven County |
25 | 2 | 1 | |
|
20 Copper Hill Road East Granby · Hartford County |
25 | 4 | 1 | |
|
283 Scenic Route 169 Woodstock · Windham County |
25 | 3 | 1 | |
|
306 Albany Turnpike Canton · Hartford County |
25 | 2 | 0 | |
|
316 South Main Street Newtown · Fairfield County |
25 | 2 | 0 | |
|
376 Main Street Durham · Middlesex County |
25 | 1 | 0 | |
|
563 Providence-New London Tnpk North Stonington · New London County |
25 | 5 | 0 | |
|
603 Middle Turnpike Mansfield Mansfield · Tolland County |
25 | 2 | 1 | |
|
70 Candlewood Lake Road Brookfield · Fairfield County |
25 | 1 | 0 | |
|
713 Danbury Road Wilton · Fairfield County |
25 | 2 | 1 | |
|
Brooklyn Market Brooklyn · Windham County |
25 | 2 | 0 | |
|
Brooksvale Park-Veterans' Memorial Bldg Hamden · New Haven County |
25 | 3 | 0 | |
|
Buddha Ariyamett Aram Temple Morris · Litchfield County |
25 | 3 | 0 | |
|
Calvary Independent Baptist Church Redding · Fairfield County |
25 | 1 | 0 | |
|
Candlewood East Beach Club/marina Brookfield · Fairfield County |
25 | 3 | 1 | |
|
Church of Latter-Day Saints, Norwich Norwich · New London County |
25 | 3 | 1 | |
|
Cobalt Gas East Hampton · Middlesex County |
25 | 1 | 0 | |
|
Congregational Church of Easton Easton · Fairfield County |
25 | 3 | 1 | |
|
Dragonfire Meadery Coventry · Tolland County |
25 | 2 | 0 | |
|
Haris&ayesha Food Mart/mobil Gas Station Morris · Litchfield County |
25 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrate, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate 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.