Water Quality in Norwich, CT (06359)
EPA violation data for public water systems serving ZIP code 06359.
Active Health Violations
12 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 91% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
5,160
Population
85
Water Systems
52
Violations (5yr)
12
Health-Based
Location
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Water Systems Serving This Area (85)
Norwich Public Utilities
Brick And Grills Restaurant
All resolvedFisher Controls International, Inc.
Kidds & Co., Llc
1 health-basedNorth Stonington Christian Academy
All resolvedStonington Institute - Main Building
All resolvedStonington Institute - North Building
All resolvedStonington Institute - Knollwood
All resolvedStonington Institute - Lodge
All resolvedN. Stonington Prof Center (Bldgs. 1&4)
Wood Pond (West 1&2)
All resolvedSecond Baptist Church
All resolvedRepublic Family Restaurant
The Tin Peddler
All resolvedNorth Stonington Congregational Church
Stonington Institute - Infirmary
All resolved220 Norwich / Westerly Road
Mystic Koa
2 health-basedLee'S Garage
Shell Oil Comp Tax Dept
Arbor Acres Farm Inc
Mobil Oil Corp Tax Dept
Country Grocery Country Bakery
Dutch Village
N Stonington Ambulance Assoc
Budget Inn
Cedar Park Inn
4 health-basedLois Gray
Stardust Motel
1 health-basedStonington Institute (Main House)
Clifton Coats N Stonington Ctr
Analysis & Technology Inc
Highland Orchards Resort,Inc
N Stonington Elementary School
Country Pumkins Childcare
240 Norwich Westerly Road (Route 2)
Lehigh Oil Comp
First Baptist Church Of North Stonington
Yerrington'S Service Center
Wheeler High School & Junior High
North Stonington Baptist Church
North Stonington Henny Penny
Howard Johnson'S Restaurant
Stonington Institute (Knollwood)
Hellen Brand Promate 6.0
1 health-basedTown Hall
Pollywogs Child Development Center
Robert Smith
Miner'S Dairy Bar
1st Baptist Church Of N Ston
Jonathan Edwards Winery
2 health-basedJ&J Machine Comp
Tinaco Plaza, Llc
1 health-basedE Boissevain
Stonington Institute (Knollwood)
Stardust Motel
Peter Grufstedt
W Moore The Little Whaler Rest
Stoningtopn Institute (Maintenance)
C King,Lake Of Isles Camp
Grange #138
N Stonington Rest Ar
Dew Drop Inn
Second Baptist Church
Custys International Buffet (138 Rt 2)
North Stonington Volunteer Fire Co., Inc
U.S. Silica Co
Ship Analytics Inc.
Chapdell
Charles Smith N Stonington Fd
Johuegel-Dory L'S Restaurant
Seagull Motel
H Van Buren Van'S Drive In
Old Country Restaurant
North Stonington Town Hall
D Anderstrom Norwich Ymca
Yerrington'S Service Cntr
Circle Park Ii
Howard Johnsons Restaurant
3rd Baptist Church
Exxon Corp
Rev F X Mcmahon
North Stonington Agricultural Fairground
Little Man'S Bakery
All resolvedNorth Stonington Grange #138
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Similar to nitrate — harmful to infants at high levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
Norwich (06359) has more violations than 91% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 52.
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
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) 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.