Gustine, CA: 1 Health Violation — 83/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Gustine tap water earns a high safety grade — above-average compliance with CA and federal standards.
How Gustine Compares
Data: EPA SDWIS Last verified: 2026-06-03
Gustine Water: The Quick Version
- Your city's water systems recorded 2 violations in the past 5 years.
- Homes built before 1986: 54% — older plumbing may contain lead solder.
- Estimated remediation: $300 per household.
- CDC health risk index: 12.06 — above typical levels.
Water Systems Serving Gustine
Multiple utilities divide Gustine, CA's water service — 2 leading providers among 2 on the federal register.
Overview
We track water quality and home safety data for 1 ZIP code in Gustine, California, covering 2 community water systems serving approximately 9,013 people.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Gustine: B (83/100)
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
Gustine water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Gustine
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95322 | B | 2 | 1 | City of Gustine |
All ZIP Codes in Gustine
- 95322 [B] — 2 violations ⚠
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 Gustine
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 Gustine
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Gustine's Housing Stock?
With 54% 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
Pre-1986 plumbing is not a rare legacy case in Gustine — it's the dominant profile. The median build year of 1987 indicates a housing stock where lead-soldered copper joints are a common structural feature of residences across the city.
Over half of homes in Gustine 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.
Gustine: Remediation Cost in Perspective
Equity impact data for Gustine lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Gustine are relatively low compared to home values. The $150–$600 estimated range is a small fraction of median property value. Home values are 41% below the California average.
Protecting Children from Lead in Gustine
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.
Despite citywide averages serving as the standard public reference point, those aggregates cannot resolve what is happening at one specific faucet — and where 54% of Gustine homes come from before the solder rule or where utility samples sit at or above the action mark, the gap between system data and faucet reality matters more than it does in lower-exposure communities. An in-home draw closes that gap, with certified filtration through retailer networks available where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Gustine, CA