Wisconsin — 7th District
119th Congress · 213 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 7th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 54005 | Clear Lake | 83 | B | 0 |
| 2 | 54009 | Dresser | 83 | B | 0 |
| 3 | 54437 | Greenwood | 83 | B | 0 |
| 4 | 54446 | Loyal | 83 | B | 0 |
| 5 | 54488 | Unity | 83 | B | 1 |
| 6 | 54498 | Withee | 83 | B | 0 |
| 7 | 54538 | Lac Du Flambeau | 83 | B | 0 |
| 8 | 54552 | Park Falls | 83 | B | 0 |
| 9 | 54566 | Wabeno | 83 | B | 0 |
| 10 | 54727 | Cadott | 83 | B | 0 |
| 11 | 54768 | Stanley | 83 | B | 1 |
| 12 | 54810 | Balsam Lake | 83 | B | 0 |
| 13 | 54814 | Bayfield | 83 | B | 1 |
| 14 | 54829 | Cumberland | 83 | B | 0 |
| 15 | 54832 | Drummond | 83 | B | 0 |
| 16 | 54835 | Exeland | 83 | B | 0 |
| 17 | 54837 | Frederic | 83 | B | 0 |
| 18 | 54858 | Milltown | 83 | B | 0 |
| 19 | 54859 | Minong | 83 | B | 0 |
| 20 | 54889 | Turtle Lake | 83 | B | 0 |
| 21 | 54893 | Webster | 83 | B | 0 |
| 22 | 54895 | Weyerhaeuser | 83 | B | 0 |
| 23 | 54004 | Clayton | 82 | B | 4 (1 health) |
| 24 | 54020 | Osceola | 82 | B | 12 (1 health) |
| 25 | 54422 | Curtiss | 82 | B | 2 |
| 26 | 54451 | Medford | 82 | B | 2 |
| 27 | 54480 | Stetsonville | 82 | B | 12 (1 health) |
| 28 | 54520 | Crandon | 82 | B | 4 (1 health) |
| 29 | 54537 | Kennan | 82 | B | 7 (1 health) |
| 30 | 54547 | Mercer | 82 | B | 3 |
| 31 | 54554 | Phelps | 82 | B | 3 |
| 32 | 54726 | Boyd | 82 | B | 2 |
| 33 | 54732 | Cornell | 82 | B | 2 |
| 34 | 54733 | Dallas | 82 | B | 106 (1 health) |
| 35 | 54757 | New Auburn | 82 | B | 2 |
| 36 | 54819 | Bruce | 82 | B | 3 |
| 37 | 54822 | Cameron | 82 | B | 44 (1 health) |
| 38 | 54830 | Danbury | 82 | B | 2 (1 health) |
| 39 | 54843 | Hayward | 82 | B | 56 (1 health) |
| 40 | 54847 | Iron River | 82 | B | 30 (1 health) |
| 41 | 54868 | Rice Lake | 82 | B | 46 (1 health) |
| 42 | 54874 | South Range | 82 | B | 7 (1 health) |
| 43 | 54876 | Stone Lake | 82 | B | 2 |
| 44 | 54891 | Washburn | 82 | B | 4 (1 health) |
| 45 | 54433 | Gilman | 81 | B | 4 |
| 46 | 54442 | Irma | 81 | B | 4 |
| 47 | 54536 | Iron Belt | 81 | B | 2 (2 health) |
| 48 | 54550 | Montreal | 81 | B | 5 (2 health) |
| 49 | 54563 | Tony | 81 | B | 12 (2 health) |
| 50 | 54817 | Birchwood | 81 | B | 16 (2 health) |
Overview
Wisconsin's 7th District serving an estimated 858,342 residents encompasses 213 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (66/100).
1753 EPA violations have been recorded across this district's water systems. 147 are health-based violations. About 49% 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 — 226 violations
- Consumer Confidence Report Rule — 192 violations
- Lead and Copper Rule — 154 violations
- Surface Water Treatment Rule — 152 violations
- Haloacetic Acids (HAA5) — 121 violations
Housing Context
Homes in this district were built on average around 1977 (~49 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 213 ZIP codes in Wisconsin's 7th District.