California — 42nd District
119th Congress · 36 ZIP codes · Avg score 75/100 · Grade B · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 36 ZIP codes in California's 42nd District: the district earns a grade B (75/100). 363 EPA violations on record, 46 health-based.
Top Contaminants
ZIP Codes in This District
36 ZIP codes tracked in California's 42nd District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 90239 | Downey | 83 | B | 1 |
| 2 | 90241 | Downey | 83 | B | 1 |
| 3 | 90242 | Downey | 83 | B | 1 |
| 4 | 90704 | Avalon | 83 | B | 0 |
| 5 | 90707 | Bellflower | 83 | B | 0 |
| 6 | 90040 | Los Angeles | 79 | B | 2 (1 health) |
| 7 | 90001 | Los Angeles | 78 | B | 2 (1 health) |
| 8 | 90058 | Los Angeles | 78 | B | 2 (1 health) |
| 9 | 90101 | Los Angeles | 78 | B | 2 (1 health) |
| 10 | 90103 | Los Angeles | 78 | B | 2 (1 health) |
| 11 | 90706 | Bellflower | 78 | B | 0 |
| 12 | 90755 | Signal Hill | 78 | B | 7 (5 health) |
| 13 | 90201 | Bell Gardens | 75 | B | 0 |
| 14 | 90255 | Huntington Park | 75 | B | 1 |
| 15 | 90713 | Lakewood | 75 | B | 0 |
| 16 | 90715 | Lakewood | 75 | B | 0 |
| 17 | 90801 | Long Beach | 75 | B | 19 (2 health) |
| 18 | 90802 | Long Beach | 75 | B | 19 (2 health) |
| 19 | 90822 | Long Beach | 73 | B | 19 (2 health) |
| 20 | 90831 | Long Beach | 73 | B | 19 (2 health) |
| 21 | 90832 | Long Beach | 73 | B | 19 (2 health) |
| 22 | 90833 | Long Beach | 73 | B | 19 (2 health) |
| 23 | 90834 | Long Beach | 73 | B | 19 (2 health) |
| 24 | 90835 | Long Beach | 73 | B | 19 (2 health) |
| 25 | 90840 | Long Beach | 73 | B | 19 (2 health) |
| 26 | 90844 | Long Beach | 73 | B | 19 (2 health) |
| 27 | 90846 | Long Beach | 73 | B | 19 (2 health) |
| 28 | 90899 | Long Beach | 73 | B | 19 (2 health) |
| 29 | 90270 | Maywood | 72 | B | 0 |
| 30 | 90804 | Long Beach | 70 | B | 19 (2 health) |
| 31 | 90808 | Long Beach | 70 | B | 19 (2 health) |
| 32 | 90813 | Long Beach | 70 | B | 19 (2 health) |
| 33 | 90814 | Long Beach | 70 | B | 19 (2 health) |
| 34 | 90815 | Long Beach | 70 | B | 19 (2 health) |
| 35 | 90803 | Long Beach | 65 | C | 19 (2 health) |
| 36 | 90202 | Bell | 53 | D | 0 |
Overview
California's 42nd District encompasses 36 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (75/100).
363 EPA violations have been recorded across this district's water systems. 46 are health-based violations. About 78% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Consumer Confidence Report Rule - 162 violations
- Stage 2 DBP Rule - 46 violations
- Lead - 39 violations
- Stage 1 DBP Rule - 19 violations
- Surface Water Treatment Rule - 19 violations
Housing Context
Homes in this district were built on average around 1959 (~67 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 36 ZIP codes in California's 42nd District.