CITY REPORT CT

Wilton, CT: 27 Violations - Home Safety 49/100

1 ZIP code · 3 water systems · Updated

ZipCheckup grade for Wilton: D.

Federal records show several conditions worth reviewing.

Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →

Wilton, CT: low grade band.

How Wilton Compares

Wilton49/100
Connecticut avg63/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
3
Water Systems
1
ZIPs Linked to Systems with Violations
D · 49
Avg Safety Score
Zone 1
County Radon Potential (High)
$891K
Median Home Value
$600
Est. Remediation (0.1% of home value)

What You Should Know About Wilton Water

  • Your city's water systems recorded 27 violations since 2021.
  • Homes built before 1986: 73% - older plumbing may contain lead solder.
  • Estimated remediation: $600 per household.

Who Supplies Your Water in Wilton

3 systems shown for Wilton, CT, from 3 on the federal list.

Overview

We track home safety data for 1 ZIP code in Wilton, Connecticut (population ~18,439), covering 3 community water systems serving approximately 434,012 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code 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 Wilton: D (49/100)

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

Wilton water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: reported as 0 mg/L (a reported 0 is not proof of no lead; check the source record for its reporting limit) (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Arsenic Inorganic 4 1
Barium Inorganic 4 1
Cadmium Inorganic 4 1
Chromium Inorganic 4 1
Cyanide Inorganic 4 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
06897 D 27 0 Aquarion-eastern Fairfield County

All ZIP Codes in Wilton

  • 06897 [D] - 27 violations

Data Sources

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

Top Contaminants in Wilton Water

Arsenic 4 violations
Inorganic · EPA regulatory level for the contaminant named above: 0.01 mg/L
Long-term exposure above the MCL: skin damage, circulatory problems, increased cancer risk
Barium 4 violations
Inorganic · EPA regulatory level for the contaminant named above: 2 mg/L
Increased blood pressure
Cadmium 4 violations
Inorganic · EPA regulatory level for the contaminant named above: 0.005 mg/L

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Housing & Infrastructure in Wilton

1978
Median Build Year
73%
Built Before 1986
48%
Built Before 1970
Copper
Likely Pipe Material

With 73% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Viewed through the lens of construction era, Wilton has a median build year of 1978; houses completed ahead of 1986 can hold lead-bearing solder or fittings.

1978
Median Year Built
73%
Pre-1986 (lead solder era; lead paint banned 1978)
48%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (48%) 1970–1986 (25%) Post-1986 (27%)

Over half of homes in Wilton were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Cost Context: What Remediation Means for Wilton Homeowners

In Wilton, estimated remediation comes to 1% or less of the median home value.

Median Home Value
$891,300
Est. Remediation
$600
Remediation as % of home value 0.1%

Estimated remediation costs in Wilton can be compared with local home values. The $400–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 118% above the Connecticut average.

Lead Exposure Risk for Children in Wilton

73%
Homes Built Before 1986

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical NFIP Claim Context in Wilton

148
Total FEMA Flood Claims
$21,103
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Wilton contains 148 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $21,103. Among ZIP codes with claim records, 100% 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 $600 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.

What You Can Do in Wilton

  1. Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
  2. Install a certified water filter. For Arsenic, listed in the water-quality records for Wilton: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
  3. Check your home's plumbing. With 73% of homes built before 1986, lead solder is a real possibility.
  4. Review your water system's CCR. If you use a community water system, request its annual Consumer Confidence Report for system-level test results or find it online.

Frequently Asked Questions

What does the Home Safety Score mean for Wilton, CT?
Wilton has an average Home Safety Score of 49/100 (Grade D) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 27 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Wilton?
EPA records list 27 EPA violations for Wilton water systems. These water-system violations are shown for 1 mapped ZIP code.
How does Wilton compare to Connecticut average?
Wilton has an average Home Safety Score of 49/100, which is below the Connecticut state average of 63/100 for the same model series.
How many water systems serve Wilton?
Our records map 3 water systems to 1 ZIP code in Wilton. The related population figure in our data is approximately 18,439 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Wilton?
Estimated remediation cost per household in Wilton: $600; modeled range $400 to $800. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Wilton, CT: 27 Violations - Home Safety 49/100. https://zipcheckup.com/cities/ct/wilton/
BibTeX
@misc{zipcheckup-cities-ct-wilton,
  author = {{ZipCheckup}},
  title  = {{Wilton, CT: 27 Violations - Home Safety 49/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ct/wilton/}
}

Page version: October 2026.

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