Winchester, CA Home Safety: Home Safety 75/100
1 ZIP code · 2 water systems · Updated
ZipCheckup grade for Winchester: B.
This ZIP has a few items worth a quick check.
Within Winchester, CA, the available records add up to an upper-tier grade; that grade describes records, not the water at a given faucet.
How Winchester Compares
Data: EPA SDWIS
Key Facts for Winchester Residents
- Average of reported 90th-percentile lead results: 0.0028 mg/L.
- Homes built before 1986: 7% - older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- Health risk index (ZipCheckup composite of CDC data): 12.09.
Winchester's Water Providers
Among 2 systems linked to Winchester, CA, the 2 biggest by population served appear below.
- 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 of reported 90th-percentile lead results: 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
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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). County health indicators are shown for context only and are not linked to this area's water records.
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
Federal restrictions on lead pipe, solder and flux in new drinking water plumbing date from the 1986 Safe Drinking Water Act amendments; the median build year of 2003 for Winchester is one reference point against that date.
Most homes in Winchester 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.
How Remediation Costs Compare in Winchester
In Winchester, estimated remediation comes to 1% or less of the median home value.
Estimated remediation costs in Winchester can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 17% below the California average.
Winchester: Lead Risk & Vulnerable Populations
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.
No safe blood lead level in children has been identified, according to CDC, so an area average under 0.010 mg/L does not rule out exposure at home. In Winchester, 7% of homes were built before 1986.
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 $500 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