Quaker Hill, CT 06375

1 water system • 180 residents

Severe water quality issues - filtration essential

Score: 13/100

Graded on EPA violations, contaminants, severity, compliance, and enforcement history. See methodology.

Data updated June 2026 • Sources: EPA ECHO and EPA Envirofacts

Contaminants Detected

305

Violations on Record

Health-Based Violations

Recent Violations

Grade Breakdown

Contaminant Count0 / 25

Violation History0 / 25

Contaminant Severity0 / 25

System Compliance0 / 15

Enforcement History0 / 10

Total Score13%

13 / 100 points

Recommended Water Filters

✓Point-of-Use Carbon Filter (NSF-certified for lead)
✓Ultraviolet (UV) Purification
✓Whole Home Carbon Filter System

Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Quaker Hill vs CT & National Average

Detected Contaminants

61 contaminants detected across water systems serving this ZIP code

Contaminant	Category
Atrazine	Agricultural
Bromodichloromethane	Disinfection Byproduct
Chloroform	Disinfection Byproduct
Dibromochloromethane	Disinfection Byproduct
Lead and Copper Rule	Heavy Metal
Coliform (TCR)	Microorganism
Revised Total Coliform Rule	Microorganism
1,1-Dichloropropene	Other
1,1,1-Trichloroethane	Other
1,1,1,2-Tetrachloroethane	Other
1,1,2-Trichloroethane	Other
1,1,2,2-Tetrachloroethane	Other
1,2-DIBROMO-3-CHLOROPROPANE	Other
1,2-Dichloropropane	Other
1,2,3-Trichloropropane	Other
1,3-Dichloropropane	Other
1,3-DICHLOROPROPENE	Other
2,2-Dichloropropane	Other
2,4-D	Other
2,4,5-TP	Other
BHC-GAMMA	Other
Bromoform	Other
Bromomethane	Other
Carbofuran	Other
Chlordane	Other
Chloroethane	Other
Chloromethane	Other
Consumer Confidence Rule	Other
Dibromomethane	Other
DICHLOROMETHANE	Other
ETHYLENE DIBROMIDE	Other
Heptachlor	Other
Heptachlor epoxide	Other
LASSO	Other
Methoxychlor	Other
Pentachlorophenol	Other
Total Polychlorinated Biphenyls (PCB)	Other
Toxaphene	Other
1,1-Dichloroethane	Volatile Organic
1,1-Dichloroethylene	Volatile Organic
1,2-Dichloroethane	Volatile Organic
Benzene	Volatile Organic
Bromobenzene	Volatile Organic
Carbon tetrachloride	Volatile Organic
CHLOROBENZENE	Volatile Organic
cis-1,2-Dichloroethylene	Volatile Organic
Ethylbenzene	Volatile Organic
m-Dichlorobenzene	Volatile Organic
m-Xylene	Volatile Organic
o-Chlorotoluene	Volatile Organic
o-Dichlorobenzene	Volatile Organic
o-Xylene	Volatile Organic
p-Chlorotoluene	Volatile Organic
p-Dichlorobenzene	Volatile Organic
p-Xylene	Volatile Organic
Styrene	Volatile Organic
Tetrachloroethylene	Volatile Organic
Toluene	Volatile Organic
trans-1,2-Dichloroethylene	Volatile Organic
Trichloroethylene	Volatile Organic
Vinyl chloride	Volatile Organic

Water System Information

Systems Serving This ZIP:: WATERFORD COUNTRY SCHOOL, INC.
Population Served:: 180
Systems With Violations:: 1 of 1
Major Violations:: 154
Enforcement Actions:: 303

Nearby Areas

06371

Old Lyme • 0.7 mi away

06385

Waterford • 3.9 mi away

06382

Uncasville • 4 mi away

06333

East Lyme • 5.2 mi away

06340

Groton • 6.1 mi away

06357

Niantic • 6.6 mi away

Frequently Asked Questions

What does the grade mean?

Our A–F grade ranks this ZIP code's water quality against every other analyzed ZIP in the country, based on EPA data. A = among the best, F = among the most troubled.

Is my tap water safe to drink?

Water systems regulated by the EPA must comply with Safe Drinking Water Act standards. However, if you're concerned about water quality, consider a water filter appropriate for your contaminants.

How often is the data updated?

We update our data quarterly with the latest EPA ECHO and Envirofacts data. Historical violations are tracked to identify patterns.

What filters do you recommend?

Filter recommendations are based on detected contaminants in your area. See our Filter Guide for detailed information about different filter types.