Barstow, CA: 48 Health Violations — 42/100 (2026)
2 ZIP codes · 4 water systems · Updated 2026-06-03
Water compliance in Barstow, CA ranks below average — documented gaps in multiple service areas.
How Barstow Compares
Data: EPA SDWIS Last verified: 2026-06-03
Barstow Water: The Quick Version
- Your city's water systems recorded 62 violations in the past 5 years.
- Estimated remediation: $1,900 per household.
- CDC health risk index: 11.58.
Water Systems Serving Barstow
Residential water service in Barstow, CA is divided among 3 separate utilities, drawn from 4 systems on file with federal regulators.
Overview
We track water quality and home safety data for 2 ZIP codes in Barstow, California, covering 4 community water systems serving approximately 33,982 people.
2 of 2 ZIP codes (100%) have recorded EPA violations. 48 health-based violations documented.
Home Safety Score
Average Home Safety Score for Barstow: D (42/100)
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
Barstow water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Barstow
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Barium | Inorganic | 66 | 2 |
| Stage 2 DBP Rule | Treatment Technique | 12 | 2 |
| Stage 1 DBP Rule | Treatment Technique | 9 | 2 |
| Surface Water Treatment Rule | Treatment Technique | 6 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 92311 | D | 31 | 24 | Usmc Nebo (barstow) |
| 92312 | F | 31 | 24 | Usmc Nebo (barstow) |
All ZIP Codes in Barstow
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.
CDC Health Data for Barstow
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
Key Contaminants Detected in Barstow
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Barstow: Remediation Cost in Perspective
Placing remediation in the context of Barstow's property market, the equity share is low — most homeowners here are weighing a financial commitment that fits comfortably within routine property planning, far from the threshold where remediation becomes a material equity decision rather than a standard upkeep consideration.
Remediation costs in Barstow are relatively low compared to home values. The $900–$3,600 estimated range is a small fraction of median property value. Home values are 71% below the California average.
Climate-Related Water Risk for Barstow
Although Barstow's flood history doesn't reach high-severity thresholds, NFIP data documents 18 claims and FEMA maps place 50% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Barstow has a moderate flood history with 18 FEMA claims averaging $6,676 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$1,900</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Barstow
- 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. Filters rated for Barium can reduce the most common contaminant found in Barstow's water.
- 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 Barstow, CA