California — 34th District
119th Congress · 150 ZIP codes · Avg score 71/100 · Grade B · Updated 2026-06-03
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03
Top Contaminants
ZIP Codes in This District
100 ZIP codes tracked in California's 34th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 91711 | Claremont | 83 | B | 0 |
| 2 | 93545 | Lone Pine | 81 | B | 1 |
| 3 | 90003 | Los Angeles | 79 | B | 2 (1 health) |
| 4 | 90006 | Los Angeles | 79 | B | 2 (1 health) |
| 5 | 90007 | Los Angeles | 79 | B | 2 (1 health) |
| 6 | 90010 | Los Angeles | 79 | B | 2 (1 health) |
| 7 | 90013 | Los Angeles | 79 | B | 2 (1 health) |
| 8 | 90015 | Los Angeles | 79 | B | 2 (1 health) |
| 9 | 90017 | Los Angeles | 79 | B | 2 (1 health) |
| 10 | 90018 | Los Angeles | 79 | B | 2 (1 health) |
| 11 | 90020 | Los Angeles | 79 | B | 2 (1 health) |
| 12 | 90022 | Los Angeles | 79 | B | 2 (1 health) |
| 13 | 90026 | Los Angeles | 79 | B | 2 (1 health) |
| 14 | 90028 | Los Angeles | 79 | B | 2 (1 health) |
| 15 | 90030 | Los Angeles | 79 | B | 2 (1 health) |
| 16 | 90031 | Los Angeles | 79 | B | 2 (1 health) |
| 17 | 90032 | Los Angeles | 79 | B | 2 (1 health) |
| 18 | 90033 | Los Angeles | 79 | B | 2 (1 health) |
| 19 | 90038 | Los Angeles | 79 | B | 2 (1 health) |
| 20 | 90040 | Los Angeles | 79 | B | 2 (1 health) |
| 21 | 90044 | Los Angeles | 79 | B | 2 (1 health) |
| 22 | 90045 | Los Angeles | 79 | B | 2 (1 health) |
| 23 | 90051 | Los Angeles | 79 | B | 2 (1 health) |
| 24 | 90054 | Los Angeles | 79 | B | 2 (1 health) |
| 25 | 90056 | Los Angeles | 79 | B | 2 (1 health) |
| 26 | 90059 | Los Angeles | 79 | B | 2 (1 health) |
| 27 | 90061 | Los Angeles | 79 | B | 2 (1 health) |
| 28 | 90062 | Los Angeles | 79 | B | 2 (1 health) |
| 29 | 90063 | Los Angeles | 79 | B | 2 (1 health) |
| 30 | 90071 | Los Angeles | 79 | B | 2 (1 health) |
| 31 | 90078 | Los Angeles | 79 | B | 2 (1 health) |
| 32 | 90084 | Los Angeles | 79 | B | 2 (1 health) |
| 33 | 93011 | Camarillo | 79 | B | 1 |
| 34 | 93016 | Fillmore | 79 | B | 4 (1 health) |
| 35 | 93062 | Simi Valley | 79 | B | 3 |
| 36 | 93093 | Simi Valley | 79 | B | 3 |
| 37 | 93094 | Simi Valley | 79 | B | 3 |
| 38 | 93099 | Simi Valley | 79 | B | 3 |
| 39 | 93546 | Mammoth Lakes | 79 | B | 2 |
| 40 | 90001 | Los Angeles | 78 | B | 2 (1 health) |
| 41 | 90002 | Los Angeles | 78 | B | 2 (1 health) |
| 42 | 90009 | Los Angeles | 78 | B | 2 (1 health) |
| 43 | 90011 | Los Angeles | 78 | B | 2 (1 health) |
| 44 | 90012 | Los Angeles | 78 | B | 2 (1 health) |
| 45 | 90021 | Los Angeles | 78 | B | 2 (1 health) |
| 46 | 90023 | Los Angeles | 78 | B | 2 (1 health) |
| 47 | 90037 | Los Angeles | 78 | B | 2 (1 health) |
| 48 | 90050 | Los Angeles | 78 | B | 2 (1 health) |
| 49 | 90052 | Los Angeles | 78 | B | 2 (1 health) |
| 50 | 90053 | Los Angeles | 78 | B | 2 (1 health) |
Overview
California's 34th District serving an estimated 477,134,624 residents encompasses 150 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (71/100).
301 EPA violations have been recorded across this district's water systems. 109 are health-based violations. About 77% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Stage 2 DBP Rule — 207 violations
- Haloacetic Acids (HAA5) — 23 violations
- Total Trihalomethanes (TTHM) — 19 violations
- Consumer Confidence Report Rule — 17 violations
- Surface Water Treatment Rule — 13 violations
Housing Context
Homes in this district were built on average around 1961 (~65 years old). Older homes may have lead pipes or solder — consider a water filter if your home predates 1986.
Data Sources
- Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
- Congressional district boundaries: U.S. Census Bureau, 119th Congress
- Housing age: U.S. Census Bureau American Community Survey
Updated daily. Data covers 150 ZIP codes in California's 34th District.