Neighborhood Report
Grade C
Lead Exceeds EPA Limit in 3 Areas — Napa, CA
3 ZIP codes · 3 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Napa, CA. We analyzed 3 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade C (57/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 1 | 33% |
| D | 2 | 67% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Napa ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 94581 | 64 | C | 1 | Exceeds EPA limit |
| 2 | 94558 | 53 | D | 1 | Exceeds EPA limit |
| 3 | 94559 | 53 | D | 1 | Exceeds EPA limit |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 0 neighborhoods score better than county average
- 3 neighborhoods score worse than county average
EPA Violations
- 3 total violations across Napa
- 0 health-based violations
- 3 of 3 ZIP codes have violations
- 3 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Consumer Confidence Report Rule | 3 | 3 |
Frequently Asked Questions
What is the safest neighborhood in Napa?
ZIP code 94581 has the highest safety score in Napa at 64/100 (grade C). Check the full report for details.
Is Napa water safe to drink?
Napa has an average water safety score of 57/100 (C). Water quality varies by neighborhood — 3 ZIP codes exceed EPA lead limits. Always check your specific ZIP code.
Related Pages
Data Sources
- EPA SDWIS
- U.S. Census Bureau
Updated daily.