Winchester, CA Home Safety: Home Safety 75/100
1 ZIP code · 2 water systems · Updated
ZipCheckup grade for Winchester: B.
This ZIP looks solid, with a few items worth a quick check.
Across Winchester, EPA monitoring data shows low violation rates and healthy safety margins - a pattern that places the city well above CA's average for drinking water compliance across recent reporting cycles.
How Winchester Compares
Data: EPA SDWIS
Key Facts for Winchester Residents
- Average lead level: 0.0028 mg/L.
- Homes built before 1986: 7% - older plumbing may contain lead solder.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 12.09 - above typical levels.
Winchester's Water Providers
Federal drinking water records identify 2 systems in Winchester, CA. The leading 2 providers serve the largest share of residential connections, each operating as a separate entity with its own rate authority, infrastructure management, and EPA compliance obligations - so service conditions are not uniform city-wide.
- B
- B
Overview
We track home safety data for 1 ZIP code in Winchester, California (population ~36,725), covering 2 community water systems serving approximately 812,728 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.
Home Safety Score
Average Home Safety Score for Winchester: B (75/100)
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
Winchester water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0028 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
Dominant radon zone: Zone 2 (Moderate 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 |
|---|---|---|---|
| 92596 | B | Eastern Municipal Water District | 666,581 |
All ZIP Codes in Winchester
- 92596 [B]
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.
Winchester Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Winchester Infrastructure Age
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
Winchester's housing stock skews relatively recent, with a median build year of 2003. Homes constructed after 1986 avoid the lead-soldered copper joints that were standard before the federal ban - reducing aggregate risk from plumbing as a contamination pathway.
Most homes in Winchester were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Winchester
Low proportionality - that's the Winchester picture when remediation costs are placed against typical home equity.
Remediation costs in Winchester are relatively low compared to home values. The $1,100–$3,400 estimated range is a small fraction of median property value. Home values are 17% below the California average.
Winchester: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Pre-rule stock in Winchester accounts for 7% of the inventory - a modest fraction - and citywide samples land safely beneath the federal action mark.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Winchester: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Winchester contains 1 flood insurance claim. Among claims with payment data, the average reported building, contents, and ICC component sum is $1,947. 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 <strong>$2,100</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.
Deep Dive Reports
Detailed analysis for Winchester, CA