Holt, CA Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Across water systems in Holt, EPA data shows a below-average compliance pattern for CA — health-based violations are on file in several areas, and checking the specific system serving your address is a practical first step for concerned residents.
How Holt Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Holt Residents
- Estimated remediation: $400 per household.
- CDC health risk index: 11.38.
Holt's Water Providers
While 1 water system appear in federal records for Holt, CA, one provider supplies the majority of residential connections — making it the central point of infrastructure and compliance accountability for most households.
Overview
We track water quality and home safety data for 1 ZIP code in Holt, California, covering 1 community water system serving approximately 191,302 people.
No EPA violations recorded across any ZIP codes in Holt — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Holt: D (53/100)
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
Holt water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Holt
- 0 ZIP codes 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 |
|---|---|---|---|
| 95234 | D | CITY OF STOCKTON | 191,302 |
All ZIP Codes in Holt
- 95234 [D]
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.
Holt 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
What You Can Do in Holt
- 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. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Holt, CA