California — 21st District
119th Congress · 37 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 37 ZIP codes in California's 21st District: the district earns a grade B (70/100). 146 EPA violations on record, 53 health-based.
Top Contaminants
ZIP Codes in This District
37 ZIP codes tracked in California's 21st District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 93625 | Fowler | 83 | B | 1 |
| 2 | 93631 | Kingsburg | 81 | B | 2 |
| 3 | 93223 | Farmersville | 79 | B | 3 (1 health) |
| 4 | 93647 | Orosi | 75 | B | 0 |
| 5 | 93701 | Fresno | 75 | B | 5 (2 health) |
| 6 | 93702 | Fresno | 75 | B | 5 (2 health) |
| 7 | 93703 | Fresno | 75 | B | 5 (2 health) |
| 8 | 93721 | Fresno | 75 | B | 5 (2 health) |
| 9 | 93722 | Fresno | 75 | B | 5 (2 health) |
| 10 | 93725 | Fresno | 75 | B | 5 (2 health) |
| 11 | 93727 | Fresno | 75 | B | 5 (2 health) |
| 12 | 93737 | Fresno | 75 | B | 5 (2 health) |
| 13 | 93221 | Exeter | 73 | B | 4 (2 health) |
| 14 | 93723 | Fresno | 73 | B | 5 (2 health) |
| 15 | 93616 | Del Rey | 72 | B | 0 |
| 16 | 93286 | Woodlake | 70 | B | 0 |
| 17 | 93704 | Fresno | 70 | B | 5 (2 health) |
| 18 | 93705 | Fresno | 70 | B | 5 (2 health) |
| 19 | 93726 | Fresno | 70 | B | 5 (2 health) |
| 20 | 93728 | Fresno | 70 | B | 5 (2 health) |
| 21 | 93654 | Reedley | 69 | C | 3 (1 health) |
| 22 | 93235 | Ivanhoe | 67 | C | 2 (1 health) |
| 23 | 93278 | Visalia | 67 | C | 6 (1 health) |
| 24 | 93279 | Visalia | 67 | C | 6 (1 health) |
| 25 | 93290 | Visalia | 67 | C | 6 (1 health) |
| 26 | 93648 | Parlier | 67 | C | 2 (1 health) |
| 27 | 93662 | Selma | 67 | C | 6 (1 health) |
| 28 | 93291 | Visalia | 66 | C | 6 (1 health) |
| 29 | 93292 | Visalia | 66 | C | 6 (1 health) |
| 30 | 93618 | Dinuba | 66 | C | 2 (1 health) |
| 31 | 93646 | Orange Cove | 66 | C | 2 (1 health) |
| 32 | 93657 | Sanger | 66 | C | 9 (3 health) |
| 33 | 93666 | Sultana | 64 | C | 9 (5 health) |
| 34 | 93227 | Goshen | 63 | C | 0 |
| 35 | 93615 | Cutler | 55 | C | 6 (5 health) |
| 36 | 93670 | Yettem | 53 | D | 0 |
| 37 | 93673 | Traver | 53 | D | 0 |
Overview
California's 21st District encompasses 37 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (70/100).
146 EPA violations have been recorded across this district's water systems. 53 are health-based violations. About 84% 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 - 90 violations
- Consumer Confidence Report Rule - 28 violations
- Contaminant 2414 - 13 violations
- Lead - 7 violations
- Total Trihalomethanes (TTHM) - 3 violations
Housing Context
Homes in this district were built on average around 1979 (~47 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 37 ZIP codes in California's 21st District.