California — 15th District
119th Congress · 25 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 25 ZIP codes in California's 15th District: the district earns a grade B (70/100). 46 EPA violations on record, 37 health-based.
Top Contaminants
ZIP Codes in This District
25 ZIP codes tracked in California's 15th District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 94005 | Brisbane | 83 | B | 0 |
| 2 | 94083 | South San Francisco | 83 | B | 0 |
| 3 | 94065 | Redwood City | 82 | B | 1 (1 health) |
| 4 | 94002 | Belmont | 78 | B | 0 |
| 5 | 94066 | San Bruno | 78 | B | 0 |
| 6 | 94061 | Redwood City | 77 | B | 1 (1 health) |
| 7 | 94016 | Daly City | 76 | B | 0 |
| 8 | 94017 | Daly City | 76 | B | 0 |
| 9 | 94011 | Burlingame | 74 | B | 0 |
| 10 | 94014 | Daly City | 73 | B | 0 |
| 11 | 94015 | Daly City | 73 | B | 0 |
| 12 | 94080 | South San Francisco | 73 | B | 0 |
| 13 | 94063 | Redwood City | 72 | B | 1 (1 health) |
| 14 | 94030 | Millbrae | 68 | C | 2 (1 health) |
| 15 | 94303 | Palo Alto | 68 | C | 0 |
| 16 | 94497 | San Mateo | 68 | C | 4 (3 health) |
| 17 | 94010 | Burlingame | 67 | C | 0 |
| 18 | 94401 | San Mateo | 66 | C | 4 (3 health) |
| 19 | 94402 | San Mateo | 66 | C | 4 (3 health) |
| 20 | 94403 | San Mateo | 66 | C | 4 (3 health) |
| 21 | 94404 | San Mateo | 66 | C | 4 (3 health) |
| 22 | 94112 | San Francisco | 54 | D | 7 (6 health) |
| 23 | 94128 | San Francisco | 53 | D | 7 (6 health) |
| 24 | 94134 | San Francisco | 53 | D | 7 (6 health) |
| 25 | 94070 | San Carlos | 50 | D | 0 |
Overview
California's 15th District encompasses 25 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (70/100).
46 EPA violations have been recorded across this district's water systems. 37 are health-based violations. About 48% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Contaminant 0700 - 18 violations
- Lead - 13 violations
- Stage 2 DBP Rule - 12 violations
- Total Trihalomethanes (TTHM) - 3 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 25 ZIP codes in California's 15th District.