Water Quality Report

Our number one goal is to provide customers with safe, reliable drinking water. Each year more than 170,000 water quality tests are conducted on the water delivered to Connecticut Water Company customers. That’s an average of 400 tests every day. Our water is routinely tested for more than 120 potential contaminants and parameters that could affect the quality of your tap water. The results of these water quality tests are summarized in an annual water quality report that is mailed to customers each summer.

We monitor and test water quality in each of our 66 different water systems across the state and report on the results of the water quality testing, and the source(s) of the drinking water supply. In addition, the report includes information about the Source Water Assessment by the Connecticut Department of Public Health (DPH), which is used to evaluate potential sources of contamination.

Some towns are served by more than one water system. If you are not sure which system serves your premises please call our customer service staff at 1-800-286-5700 or e-mail us your address. We also have additional information about water quality in our fact sheets on Lead in Drinking Water, Fluoride in Drinking Water, Chlorine in Drinking Water and Low Risk of Pharmaceuticals in Drinking Water in Connecticut.

Town	Water System(s)
Ashford	Ashford Elderly/Pompey Hollow, Ashford Park
Avon	Collinsville, Unionville
Beacon Falls	Central
Bethany	Central
Bolton	Llynwood
Brooklyn	Crystal
Burlington	Collinsville
Canton	Collinsville
Chester	Chester, Chester Village West
Clinton	Guilford
Colchester	Amston Lake, Ponemah Village, Westchester Village
Columbia	Columbia Heights
Coventry	Coventry Hills, General Water, Lakeview, Lakewood, Nathan Hale, Pilgrim Hills, South Coventry
Deep River	Chester
East Granby	Northern-Western
East Haddam	Banner Village, Lake Hayward
East Hampton	Baker Hill, Spice Hill, Westchester East
East Windsor	Northern-Western
Ellington	Northern-Western
Enfield	Northern-Western
Essex	Chester
Farmington	Chimney Hill, Unionville
Griswold	Bay Mountain, Country Mobile Estates
Guilford	Guilford
Hebron	Amston Lake, Country Manor, Hebron Center, London Park, Mill at Stonecroft, Wellswood Village
Killingly	Crystal
Killingworth	Beechwood
Lebanon	Amston Lake, Lebanon Elderly
Madison	Green Springs, Guilford, Legend Hill
Manchester	Redwood Farms
Mansfield	Birchwood Heights, Crystal Springs, Pinewoods Lane, Rolling Hills*
Marlborough	Florence Lord Elderly-MASH, Forest Homes, Marlborough Gardens, Sachem Village
Middlebury	Central, Hill Crest Fire District
Naugatuck	Central
Old Lyme	Point O’Woods, Soundview
Old Saybrook	Guilford
Plainfield	Gallup, Plainfield
Plymouth	Terryville
Portland	Rivercrest
Prospect	Central
Somers	Northern-Western
South Windsor	Northern-Western
Stafford	Stafford Springs
Stonington	Masons Island
Suffield	Northern-Western
Thomaston	Thomaston
Thompson	Thompson
Tolland	Northern-Western
Vernon	Llynwood, Reservoir Heights, Northern-Western
Voluntown	SDC
Waterbury	Central
Westbrook	Guilford
Willington	Riversedge
Windsor Locks	Northern-Western
Woodstock	Cornfield Point

*Rolling Hills is now served by the Western Water System.