Water Quality in Harwinton, CT (06791)
EPA violation data for public water systems serving ZIP code 06791.
Active Health Violations
3 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 97% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
5,602
Population
39
Water Systems
109
Violations (5yr)
3
Health-Based
Location
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Water Systems Serving This Area (39)
Toast Four Corners
Lindhbrook Water Company
3 health-basedFairview Farms Golf Course & Restaurant
283 Litchfield Rd, Llc
Woodland Friends
Wintergreen
Covey Meadow Commons (4 Covey Rd.)
Cumberland Farms
All resolvedA Cut Above
Petits Corner Store
Harwinton Rod & Gun
Harwinton Senior Center
Harwinton Fire Dept
Municipal Complex/Library&Town Hall
Ifflands Colonial Service Inc.
Harwinton Youth Sports
D'Amato'S Excel Martial Arts
Harwinton Plaza (Family Pizza)
Harwinton Congregational Church
Harwinton Fairgrounds
Founders Congregational Church
Dr. David L. French
Harwinton Nutrition Program
Harwinton Vol. Fire Dept.
Upper Cut
Harwinton Town Garage
Immaculate Heart Of Mary
Thomaston Savings Bank
519 - 525 Burlington Road
Burville Food Market
Harwinton Community Hall
Johny Cake Airport
Clearview Industrial Park
Harwinton West Side Fire Dept
E & E Tool And Manufacturing Company
Litchfield Hills Pool & Fence Co
15-21 Burlington Road
Cumberland Farms #4647
Public America/Mansfield Aquasition
All resolvedContaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
Copper (Cu)
Exceeds limitSampled: Jul 2023
How Does This Compare?
Harwinton (06791) has more violations than 97% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 109.
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.