Pasadena, CA Neighborhood Water Quality - Grade B
26 ZIP codes · 130 EPA violations
Data source: EPA SDWIS Last verified: 2026-07-19
ZipCheckup compares 26 ZIP codes across Pasadena, CA. The area averages a grade B (81/100); 26 ZIP codes carry recorded EPA violations.
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.