Water Quality: Norwalk, CT
2 water systems • 40,356 people served
Some ConcernsWater Quality Summary
Norwalk is served by 2 public water systems with a combined service population of 40,356 people, and has 8 EPA Safe Drinking Water Act violations on record. Critically, 1 of those are health-based violation, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Norwalk's violation count is 97% below the national average for Connecticut. Contaminants associated with violations include Chlorine Dioxide.
Contaminants Found
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Water Systems Serving Norwalk
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| NORWALK FIRST TAXING DISTRICT | CT1030011 | Surface Water | 40,256 | 4 |
| BREEZY KNOLL ASSOCIATION | CT0878011 | Groundwater | 100 | 4 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Connecticut
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.