Shelton, CT 06484

68 water systems • 698,892 residents

Poor water quality - filtration recommended

Score: 33/100

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

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

113

Contaminants Detected

7,147

Violations on Record

435

Health-Based Violations

Recent Violations

Grade Breakdown

Contaminant Count0 / 25

Violation History12 / 25

Contaminant Severity17 / 25

System Compliance0 / 15

Enforcement History0 / 10

Total Score33%

33 / 100 points

Recommended Water Filters

✓Point-of-Use Carbon Filter (NSF-certified for lead)
✓Reverse Osmosis or Ion Exchange Filter
✓Ultraviolet (UV) Purification
✓Activated Carbon Filter (disinfection byproducts)
✓Whole Home Carbon Filter System

Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Shelton vs CT & National Average

Detected Contaminants

113 contaminants detected across water systems serving this ZIP code

Contaminant	Category
Atrazine	Agricultural
Glyphosate	Agricultural
Nitrate	Agricultural
Nitrite	Agricultural
Simazine	Agricultural
Bromodichloromethane	Disinfection Byproduct
Chlorite	Disinfection Byproduct
Chloroform	Disinfection Byproduct
Dibromochloromethane	Disinfection Byproduct
Total Haloacetic Acids (HAA5)	Disinfection Byproduct
TTHM	Disinfection Byproduct
Antimony, Total	Heavy Metal
Arsenic	Heavy Metal
Barium	Heavy Metal
Beryllium, Total	Heavy Metal
Cadmium	Heavy Metal
Chromium	Heavy Metal
Lead and Copper Rule	Heavy Metal
Mercury	Heavy Metal
Nickel	Heavy Metal
Selenium	Heavy Metal
Thallium, Total	Heavy Metal
Asbestos	Inorganic
CYANIDE	Inorganic
Fluoride	Inorganic
Coliform (TCR)	Microorganism
E. COLI	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
Aldicarb	Other
Aldicarb sulfone	Other
Aldicarb sulfoxide	Other
Benzo(a)pyrene	Other
BHC-GAMMA	Other
Bromoform	Other
Bromomethane	Other
Carbofuran	Other
CARBON, TOTAL	Other
Chlordane	Other
Chlorine	Other
Chloroethane	Other
Chloromethane	Other
Consumer Confidence Rule	Other
Dalapon	Other
Di(2-ethylhexyl) adipate	Other
Di(2-ethylhexyl) phthalate	Other
Dibromomethane	Other
DICHLOROMETHANE	Other
Dinoseb	Other
Diquat	Other
Endrin	Other
ETHYLENE DIBROMIDE	Other
Groundwater Rule	Other
Heptachlor	Other
Heptachlor epoxide	Other
Hexachlorocyclopentadiene	Other
Interim Enhanced Surface Water Treatment Rule	Other
LASSO	Other
Long Term 2 Enhanced Surface Water Treatment Rule	Other
ManMade Beta Particle and Photon Emitter	Other
Methoxychlor	Other
OXAMYL	Other
Pentachlorophenol	Other
Picloram	Other
Public Notice	Other
Silver	Other
Sulfate	Other
Surface Water Treatment Rule	Other
Total Polychlorinated Biphenyls (PCB)	Other
Toxaphene	Other
Combined Radium (-226 and -228)	Radiological
Combined Uranium	Radiological
Gross Alpha, Excl. Radon and U	Radiological
Gross Beta Particle Activity	Radiological
Radium-226	Radiological
Radium-228	Radiological
1,1-Dichloroethane	Volatile Organic
1,1-Dichloroethylene	Volatile Organic
1,2-Dichloroethane	Volatile Organic
1,2,4-Trichlorobenzene	Volatile Organic
Benzene	Volatile Organic
Bromobenzene	Volatile Organic
Carbon tetrachloride	Volatile Organic
CHLOROBENZENE	Volatile Organic
cis-1,2-Dichloroethylene	Volatile Organic
Ethylbenzene	Volatile Organic
HEXACHLOROBENZENE	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:: AQUARION-PARK GLEN, AQUARION-SUFFIELD, AQUARION-WEST SHORE, AQUARION-WOODBURY, AQUARION-OAKWOOD ACRES +5 more
Population Served:: 698,892
Systems With Violations:: 68 of 68
Major Violations:: 4,541
Enforcement Actions:: 7,062

Nearby Areas

06611

Trumbull • 5.2 mi away

06468

Monroe • 5.5 mi away

06477

Orange • 6 mi away

06483

Seymour • 7.4 mi away

06612

Easton • 8.8 mi away

06604

Bridgeport • 9.3 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.