CITY REPORT CT

North Westchester, CT: High Radon Risk — 40/100 (2026)

1 ZIP code · 1 water system · Updated 2026-06-03

North Westchester, CT: water systems collectively below average — violations documented.

How North Westchester Compares

North Westchester40/100

Connecticut avg65/100

National avg67/100

Data: EPA SDWIS Last verified: 2026-06-03

ZIP Codes

Water Systems

ZIPs with Violations

D · 40

Avg Safety Score

Zone 1

Radon Risk (High)

$1,200

Est. Remediation

North Westchester's Water Providers

Supply infrastructure in North Westchester, CT runs through a single dominant provider — the main entity among 1 tracked system through which rate decisions, infrastructure work, and federal compliance are managed.

COLCHESTER SEWER & WATER COMMISSION

Serves ~4,020 people

/100

Overview

We track water quality and home safety data for 1 ZIP code in North Westchester, Connecticut, covering 1 community water system serving approximately 4,020 people.

No EPA violations recorded across any ZIP codes in North Westchester — an excellent indicator of water quality.

Home Safety Score

Average Home Safety Score for North Westchester: D (40/100)

The score combines three factors:

Factor	What It Measures
Water Quality	EPA violations and compliance history
Lead Levels	90th percentile lead concentration vs EPA action level
Radon Risk	EPA radon zone classification

Water Sources

North Westchester water systems draw from: Groundwater.

Lead & Copper

Lead data: not yet available for North Westchester
0 ZIP codes exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 1 (High Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Areas with No Violations

ZIP Code	Safety Score	System	Population
06474	D	COLCHESTER SEWER & WATER COMMISSION	4,020

All ZIP Codes in North Westchester

06474 [D]

Data Sources

Water quality: EPA Safe Drinking Water Information System (SDWIS)
Lead/copper: EPA Lead and Copper Rule sampling data
Radon: EPA Map of Radon Zones

Updated daily.

What You Can Do in North Westchester

Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.

Deep Dive Reports

Detailed analysis for North Westchester, CT

💧

Water Quality

EPA violations, contaminant data, and water system grades

0 EPA violations

🌬️

Air Quality

AQI data, wildfire smoke risk, mold risk, and health tips

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Home Safety

Composite safety score, remediation costs, equity trap analysis

40/100 safety score

Compare with Nearby Cities

1 ZIPs · 13 violations · Grade B

Ansonia, CT

1 ZIPs · Grade D

Ashford, CT

1 ZIPs · 28 violations · Grade B

Frequently Asked Questions

Is the water safe to drink in North Westchester, CT?

North Westchester has an average water safety score of 40/100 (Grade D). No EPA violations on record. Check individual ZIP code reports for details specific to your neighborhood.

How does North Westchester compare to Connecticut average?

North Westchester has an average water safety score of 40/100, which is below the Connecticut state average of 65/100.

How many water systems serve North Westchester?

North Westchester is served by 1 public water system across 1 ZIP code, serving approximately 4,020 people.

How much does it cost to fix water issues in North Westchester?

Estimated remediation costs in North Westchester average $1,200 per household, ranging from $800 to $1,500. Costs include filtration, pipe replacement, radon mitigation, and flood protection.

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