Wisconsin — 3rd District
119th Congress · 140 ZIP codes · Avg score 66/100 · Grade C · 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 Wisconsin's 3rd District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 53962 | Union Center | 83 | B | 0 |
| 2 | 54637 | Hustler | 83 | B | 0 |
| 3 | 54648 | Norwalk | 83 | B | 0 |
| 4 | 54669 | West Salem | 83 | B | 1 |
| 5 | 54758 | Osseo | 83 | B | 0 |
| 6 | 54611 | Alma Center | 82 | B | 4 (1 health) |
| 7 | 54636 | Holmen | 82 | B | 6 (1 health) |
| 8 | 54644 | Mindoro | 82 | B | 4 (1 health) |
| 9 | 54646 | Necedah | 82 | B | 8 (1 health) |
| 10 | 54725 | Boyceville | 82 | B | 2 (1 health) |
| 11 | 54735 | Downsville | 82 | B | 2 |
| 12 | 54738 | Eleva | 82 | B | 148 (1 health) |
| 13 | 54742 | Fall Creek | 82 | B | 9 (1 health) |
| 14 | 54754 | Merrillan | 82 | B | 4 (1 health) |
| 15 | 54760 | Pigeon Falls | 82 | B | 2 |
| 16 | 54767 | Spring Valley | 82 | B | 2 |
| 17 | 53952 | Oxford | 81 | B | 4 |
| 18 | 54635 | Hixton | 81 | B | 6 (2 health) |
| 19 | 54653 | Rockland | 81 | B | 3 (2 health) |
| 20 | 54770 | Strum | 81 | B | 1 |
| 21 | 54614 | Bangor | 80 | B | 4 |
| 22 | 54659 | Taylor | 80 | B | 3 |
| 23 | 54773 | Whitehall | 79 | B | 6 (1 health) |
| 24 | 53910 | Adams | 78 | B | 5 |
| 25 | 53929 | Elroy | 78 | B | 0 |
| 26 | 53944 | Lyndon Station | 78 | B | 0 |
| 27 | 53968 | Wonewoc | 78 | B | 0 |
| 28 | 54612 | Arcadia | 78 | B | 0 |
| 29 | 54618 | Camp Douglas | 78 | B | 7 |
| 30 | 54619 | Cashton | 78 | B | 0 |
| 31 | 54650 | Onalaska | 78 | B | 0 |
| 32 | 54749 | Knapp | 78 | B | 14 (1 health) |
| 33 | 54457 | Nekoosa | 77 | B | 3 |
| 34 | 54625 | Dodge | 77 | B | 24 (6 health) |
| 35 | 53948 | Mauston | 76 | B | 127 (2 health) |
| 36 | 54615 | Black River Falls | 76 | B | 12 (2 health) |
| 37 | 54616 | Blair | 76 | B | 2 (2 health) |
| 38 | 54720 | Altoona | 76 | B | 9 (4 health) |
| 39 | 54630 | Galesville | 75 | B | 158 (2 health) |
| 40 | 54642 | Melrose | 75 | B | 0 |
| 41 | 54666 | Warrens | 75 | B | 0 |
| 42 | 53934 | Friendship | 73 | B | 5 |
| 43 | 54661 | Trempealeau | 73 | B | 0 |
| 44 | 53950 | New Lisbon | 72 | B | 2 (1 health) |
| 45 | 54656 | Sparta | 72 | B | 9 |
| 46 | 54670 | Wilton | 71 | B | 4 (4 health) |
| 47 | 53573 | Muscoda | 70 | B | 0 |
| 48 | 54443 | Junction City | 70 | B | 0 |
| 49 | 54660 | Tomah | 70 | B | 2 (2 health) |
| 50 | 54747 | Independence | 70 | B | 0 |
Overview
Wisconsin's 3rd District serving an estimated 280,501 residents encompasses 140 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (66/100).
1698 EPA violations have been recorded across this district's water systems. 124 are health-based violations. About 63% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Stage 1 DBP Rule — 155 violations
- Consumer Confidence Report Rule — 154 violations
- Lead and Copper Rule — 91 violations
- Stage 2 DBP Rule — 76 violations
- Surface Water Treatment Rule — 65 violations
Housing Context
Homes in this district were built on average around 1973 (~53 years old). Older homes may have lead pipes or solder — consider a water filter if your home predates 1986.
Lead Alert: 2 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 140 ZIP codes in Wisconsin's 3rd District.