CITY REPORT CA

Windsor, CA: 1 Violation - Home Safety 100/100

1 ZIP code · 5 water systems · Updated

ZipCheckup grade for Windsor: A.

Checked records flag no major concern; missing data is unknown.

In the dataset behind this page, Windsor, CA receives one of the two highest grades; read the compliance history system by system for details.

How Windsor Compares

Windsor100/100
California avg76/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
5
Water Systems
1
ZIPs Linked to Systems with Violations
A · 100
Avg Safety Score
Zone 3
County Radon Potential (Low)
$778K
Median Home Value

What You Should Know About Windsor Water

  • Water systems mapped to your city have 1 violation on record since 2021.
  • Average of reported 90th-percentile lead results: 0.006 mg/L.
  • Homes built before 1986: 34% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 11.32.

Who Supplies Your Water in Windsor

When a city is linked to 5 water systems, as Windsor, CA is in federal records, water in one neighborhood may come from a different system than in another. The 3 systems with the largest reported populations are shown below, and their compliance records are kept separately, so a violation logged for one does not describe the others.

Overview

We track home safety data for 1 ZIP code in Windsor, California (population ~27,455), covering 5 community water systems serving approximately 220,043 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 Windsor: A (100/100)

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

Windsor water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0060 mg/L (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 3.

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

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
95492 A 1 0 Windsor, Town of

All ZIP Codes in Windsor

  • 95492 [A] - 1 violation

Data Sources

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

Health Outcomes in Windsor

9.8%
Asthma (US: 9.8%)
10.7%
Diabetes (US: 10.4%)
15.8%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 9.8% ↓
Diabetes 10.7% ↑
Mental Health 15.8% ↑

Vertical line = national average. ■ Above national · ■ Below national

Housing & Infrastructure in Windsor

1997
Median Build Year
34%
Built Before 1986
9%
Built Before 1970
Copper
Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

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

Housing Age Profile

1997 is the median build year in Windsor, and the age breakdown below shows how much of the housing predates 1986.

1997
Median Year Built
34%
Pre-1986 (lead solder era; lead paint banned 1978)
9%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (9%) 1970–1986 (25%) Post-1986 (66%)

Most homes in Windsor were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Lead Exposure Risk for Children in Windsor

34%
Homes Built Before 1986
0.006
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

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 Windsor

40
Total FEMA Flood Claims
$11,531
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Windsor contains 40 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $11,531. 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.

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.

Frequently Asked Questions

What does the Home Safety Score mean for Windsor, CA?
Windsor has an average Home Safety Score of 100/100 (Grade A) 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. 1 violation appears 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 Windsor?
EPA records list 1 EPA violation for Windsor water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Windsor water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Windsor is 0.006 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Windsor compare to California average?
Windsor has an average Home Safety Score of 100/100, which is at or above the California state average of 76/100 for the same model series.
How many water systems serve Windsor?
Our records map 5 water systems to 1 ZIP code in Windsor. The related population figure in our data is approximately 27,455 people; it is not a count of people served citywide.
Home → Cities → California → Windsor, CA

How to cite this page

APA ZipCheckup. (2026). Windsor, CA: 1 Violation - Home Safety 100/100. https://zipcheckup.com/cities/ca/windsor/
BibTeX
@misc{zipcheckup-cities-ca-windsor,
  author = {{ZipCheckup}},
  title  = {{Windsor, CA: 1 Violation - Home Safety 100/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ca/windsor/}
}

Page version: October 2026.

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