Neighborhood Report
Grade B
Pasadena, CA Neighborhood Water Quality — Grade B
26 ZIP codes · 130 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Pasadena, CA. We analyzed 26 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade B (81/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 1 | 4% |
| B | 25 | 96% |
| C | 0 | 0% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Pasadena ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 91109 | 93 | A | 5 | 0.0018 mg/L |
| 2 | 91101 | 81 | B | 5 | 0.0018 mg/L |
| 3 | 91102 | 81 | B | 5 | 0.0018 mg/L |
| 4 | 91104 | 81 | B | 5 | 0.0018 mg/L |
| 5 | 91106 | 81 | B | 5 | 0.0018 mg/L |
| 6 | 91110 | 81 | B | 5 | 0.0018 mg/L |
| 7 | 91114 | 81 | B | 5 | 0.0018 mg/L |
| 8 | 91115 | 81 | B | 5 | 0.0018 mg/L |
| 9 | 91116 | 81 | B | 5 | 0.0018 mg/L |
| 10 | 91117 | 81 | B | 5 | 0.0018 mg/L |
| 11 | 91121 | 81 | B | 5 | 0.0018 mg/L |
| 12 | 91123 | 81 | B | 5 | 0.0018 mg/L |
| 13 | 91124 | 81 | B | 5 | 0.0018 mg/L |
| 14 | 91125 | 81 | B | 5 | 0.0018 mg/L |
| 15 | 91126 | 81 | B | 5 | 0.0018 mg/L |
| 16 | 91129 | 81 | B | 5 | 0.0018 mg/L |
| 17 | 91182 | 81 | B | 5 | 0.0018 mg/L |
| 18 | 91184 | 81 | B | 5 | 0.0018 mg/L |
| 19 | 91185 | 81 | B | 5 | 0.0018 mg/L |
| 20 | 91188 | 81 | B | 5 | 0.0018 mg/L |
| 21 | 91189 | 81 | B | 5 | 0.0018 mg/L |
| 22 | 91191 | 81 | B | 5 | 0.0018 mg/L |
| 23 | 91199 | 81 | B | 5 | 0.0018 mg/L |
| 24 | 91103 | 76 | B | 5 | 0.0018 mg/L |
| 25 | 91105 | 76 | B | 5 | 0.0018 mg/L |
| 26 | 91107 | 76 | B | 5 | 0.0018 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 26 neighborhoods score better than county average
- 0 neighborhoods score worse than county average
EPA Violations
- 130 total violations across Pasadena
- 0 health-based violations
- 26 of 26 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Consumer Confidence Report Rule | 104 | 26 |
| Total Coliform | 26 | 26 |
Frequently Asked Questions
What is the safest neighborhood in Pasadena?
ZIP code 91109 has the highest safety score in Pasadena at 93/100 (grade A). Check the full report for details.
Is Pasadena water safe to drink?
Pasadena has an average water safety score of 81/100 (B). 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.