California — 3rd District
119th Congress · 119 ZIP codes · Avg score 69/100 · Grade C · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 119 ZIP codes in California's 3rd District: the district earns a grade C (69/100). 182 EPA violations on record, 52 health-based.
Top Contaminants
ZIP Codes in This District
100 ZIP codes tracked in California's 3rd District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 95763 | Folsom | 98 | A | 1 |
| 2 | 96020 | Chester | 94 | A | 1 (1 health) |
| 3 | 95671 | Represa | 93 | A | 2 (1 health) |
| 4 | 95630 | Folsom | 89 | A | 1 |
| 5 | 93546 | Mammoth Lakes | 83 | B | 1 |
| 6 | 95604 | Auburn | 83 | B | 0 |
| 7 | 95658 | Newcastle | 83 | B | 0 |
| 8 | 95713 | Colfax | 83 | B | 1 |
| 9 | 95715 | Emigrant Gap | 83 | B | 0 |
| 10 | 95722 | Meadow Vista | 83 | B | 0 |
| 11 | 95910 | Alleghany | 83 | B | 0 |
| 12 | 95919 | Brownsville | 83 | B | 0 |
| 13 | 95949 | Grass Valley | 83 | B | 1 |
| 14 | 96111 | Floriston | 83 | B | 1 |
| 15 | 96125 | Sierra City | 83 | B | 1 |
| 16 | 96126 | Sierraville | 83 | B | 0 |
| 17 | 96148 | Tahoe Vista | 83 | B | 0 |
| 18 | 96160 | Truckee | 83 | B | 0 |
| 19 | 96162 | Truckee | 83 | B | 0 |
| 20 | 92328 | Death Valley | 82 | B | 2 |
| 21 | 95636 | Grizzly Flats | 82 | B | 2 |
| 22 | 95662 | Orangevale | 82 | B | 0 |
| 23 | 95703 | Applegate | 82 | B | 2 (1 health) |
| 24 | 95959 | Nevada City | 82 | B | 1 (1 health) |
| 25 | 93545 | Lone Pine | 81 | B | 1 |
| 26 | 95634 | Georgetown | 81 | B | 5 |
| 27 | 95922 | Camptonville | 80 | B | 4 |
| 28 | 96151 | South Lake Tahoe | 80 | B | 4 |
| 29 | 96152 | South Lake Tahoe | 80 | B | 4 |
| 30 | 96154 | South Lake Tahoe | 80 | B | 4 |
| 31 | 96155 | South Lake Tahoe | 80 | B | 4 |
| 32 | 96156 | South Lake Tahoe | 80 | B | 4 |
| 33 | 96157 | South Lake Tahoe | 80 | B | 4 |
| 34 | 96158 | South Lake Tahoe | 80 | B | 4 |
| 35 | 93517 | Bridgeport | 79 | B | 5 (1 health) |
| 36 | 95946 | Penn Valley | 79 | B | 3 (1 health) |
| 37 | 96106 | Clio | 79 | B | 3 (1 health) |
| 38 | 96140 | Carnelian Bay | 79 | B | 4 (1 health) |
| 39 | 96145 | Tahoe City | 79 | B | 2 (1 health) |
| 40 | 95602 | Auburn | 78 | B | 0 |
| 41 | 95603 | Auburn | 78 | B | 0 |
| 42 | 95631 | Foresthill | 78 | B | 4 (1 health) |
| 43 | 95747 | Roseville | 78 | B | 1 |
| 44 | 95936 | Downieville | 78 | B | 4 (2 health) |
| 45 | 95945 | Grass Valley | 78 | B | 1 |
| 46 | 95962 | Oregon House | 78 | B | 2 (1 health) |
| 47 | 96161 | Truckee | 78 | B | 0 |
| 48 | 92384 | Shoshone | 77 | B | 8 (2 health) |
| 49 | 95728 | Soda Springs | 77 | B | 1 (1 health) |
| 50 | 95971 | Quincy | 76 | B | 1 |
Overview
California's 3rd District encompasses 119 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (69/100).
182 EPA violations have been recorded across this district's water systems. 52 are health-based violations. About 47% 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 - 63 violations
- Stage 1 DBP Rule - 24 violations
- Consumer Confidence Report Rule - 23 violations
- Haloacetic Acids (HAA5) - 10 violations
- Fecal Coliform - 10 violations
Housing Context
Homes in this district were built on average around 1976 (~50 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.
Lead Alert: 5 ZIP codes in this district exceed the EPA action level for lead. Consider using a certified lead-removal filter.
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 119 ZIP codes in California's 3rd District.