Capay, CA Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Capay's water quality grade in CA reflects a middle-ground assessment — service areas range from fully compliant to violation-flagged in current EPA records.
How Capay Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Capay Residents
- Homes built before 1986: 57% — older plumbing may contain lead solder.
- CDC health risk index: 9.83.
Capay's Water Providers
One utility dominates residential water service in Capay, CA — out of 1 system in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Capay, California (population ~271), covering 1 community water system serving approximately 3,574 people region-wide.
No EPA violations recorded across any ZIP codes in Capay — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Capay: C (66/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Capay water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Capay
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 95607 | C | ESPARTO C.S.D. | 3,574 |
All ZIP Codes in Capay
- 95607 [C]
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
Updated daily.
Capay 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
Capay Infrastructure Age
With 57% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
While newer cities carry lower aggregate plumbing risk from lead-era construction, Capay sits firmly in the older category. The median build year of 1985 indicates that more than half the housing stock was built before 1986, when lead solder was still legally used in residential copper plumbing — and a substantial portion likely predates 1970, when lead pipes were still commonly installed for service lines. These two thresholds together define the elevated plumbing risk environment that older housing cities carry, independent of what the municipal water supply delivers to the meter.
Over half of homes in Capay were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Capay: 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.
Although utility-side compliance with federal Lead and Copper requirements remains the system reference, that compliance does not extend down into interior plumbing. With 57% of Capay stock built before the solder ban and aggregate readings at or beyond the action mark, a household-level sample becomes the practical way to close that information gap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Capay
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 57% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Capay, CA