If you're researching Stamford, CT tap water quality, the baseline finding is below average - health-based violations are documented in several service areas, and verifying the specific system at your address is the right next step.

Data: EPA SDWIS

Water Quality Map: Stamford, CT

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Overview

We track home safety data for 19 ZIP codes in Stamford, Connecticut (population ~135,720), covering 1 community water system serving approximately 351,756 people region-wide. The EPA snapshots used for this build directly map water systems to 6 of 19 ZIP codes.

6 of 6 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Home Safety Score

Average Home Safety Score for Stamford: D (50/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor	What It Measures
Water Quality	EPA violations and compliance history
PFAS MCL Screen	UCMR 5 testing against the covered federal MCLs
Radon Risk	EPA radon zone classification
Annual AQI	EPA AirData county-year median with at least 90 observed days

Water Sources

Stamford water systems draw from: Surface water.

Lead & Copper

• Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
• 0 of 6 ZIP codes with known status exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 1 (High Risk)

• Zone 1 (High): 19 ZIP codes
• Zone 2 (Moderate): 0 ZIP codes
• Zone 3 (Low): 0 ZIP codes

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

Top Contaminants

Areas with Most Violations

All ZIP Codes in Stamford

• 06901 [D] - 24 violations
• 06902 - 24 violations
• 06903 [D] - 24 violations
• 06904
• 06905 [D] - 24 violations
• 06906 [D] - 24 violations
• 06907 [D] - 24 violations
• 06910
• 06911
• 06912
• 06913
• 06914
• 06920
• 06921
• 06922
• 06925
• 06926
• 06927
• 06928

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

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Cost Context: What Remediation Means for Stamford Homeowners

Across Stamford, the equity share taken up by estimated remediation is small - a favorable ratio for most property owners.

Median Home Value

$576,200

Est. Remediation

$2,195

Remediation as % of home value 0.4%

Remediation costs in Stamford are relatively low compared to home values. The $1,413–$3,084 estimated range is a small fraction of median property value. Home values are 41% above the Connecticut average.

Historical NFIP Claim Context in Stamford

1,169

Total FEMA Flood Claims

$31,905

Avg Reported Sum With Payment Data

43%

A/V Share of Claim-Record ZIPs

Historical NFIP data for Stamford contains 1,169 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $31,905. Among ZIP codes with claim records, 43% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$2,195</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.