Neighborhood Report
Grade C
Hollister, CA Neighborhood Water Quality — Grade C
2 ZIP codes · 16 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-04
Water quality varies significantly across Hollister, CA. We analyzed 2 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade C (64/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 2 | 100% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Hollister ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 95024 | 67 | C | 8 | 0.0023 mg/L |
| 2 | 95023 | 60 | C | 8 | 0.0023 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 0 neighborhoods score better than county average
- 2 neighborhoods score worse than county average
EPA Violations
- 16 total violations across Hollister
- 8 health-based violations
- 2 of 2 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Barium | 4 | 2 |
| Haloacetic Acids (HAA5) | 4 | 2 |
| Stage 2 DBP Rule | 4 | 2 |
| Total Trihalomethanes (TTHM) | 2 | 2 |
| Lead and Copper Rule | 2 | 2 |
Frequently Asked Questions
What is the safest neighborhood in Hollister?
ZIP code 95024 has the highest safety score in Hollister at 67/100 (grade C). Check the full report for details.
Is Hollister water safe to drink?
Hollister has an average water safety score of 64/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.
Related Pages
Data Sources
- EPA SDWIS
- U.S. Census Bureau
Updated daily.