Water Quality in Norwich, CT (06357)
EPA violation data for public water systems serving ZIP code 06357.
Active Health Violations
2 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 95% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
11,332
Population
18
Water Systems
81
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (18)
Norwich Public Utilities
East Lyme Water & Sewer Commission
All resolvedNiantic Koa
Christy Hill Condominiums
Salem Manor Condominiums, System #1
1 health-basedTown Of East Lyme
Green Valley Lakes
Plainfield Motel And Rest.
Town Of East Lyme
Lillie B Haynes
Town Of East Lyme
Salem Manor Condominiums, System #2
1 health-basedPier Iv Restaurant
East Lyme Jr High
Allen Bryant
Town Of East Lyme
Dodge Townhouse Apts
Honeywell International
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
Norwich (06357) has more violations than 95% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 81.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.