Minnesota — 1st District
119th Congress · 178 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 178 ZIP codes in Minnesota's 1st District: the district earns a grade C (61/100). 167 EPA violations on record, 19 health-based.
Top Contaminants
ZIP Codes in This District
100 ZIP codes tracked in Minnesota's 1st District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 55049 | Medford | 70 | B | 0 |
| 2 | 55909 | Adams | 70 | B | 0 |
| 3 | 55917 | Blooming Prairie | 70 | B | 0 |
| 4 | 55918 | Brownsdale | 70 | B | 0 |
| 5 | 55920 | Byron | 70 | B | 0 |
| 6 | 55929 | Dover | 70 | B | 0 |
| 7 | 55934 | Eyota | 70 | B | 0 |
| 8 | 55935 | Fountain | 70 | B | 0 |
| 9 | 55945 | Kellogg | 70 | B | 0 |
| 10 | 55957 | Millville | 70 | B | 0 |
| 11 | 55969 | Rollingstone | 70 | B | 0 |
| 12 | 55976 | Stewartville | 70 | B | 0 |
| 13 | 55992 | Zumbrota | 70 | B | 0 |
| 14 | 56016 | Clarks Grove | 70 | B | 0 |
| 15 | 56036 | Glenville | 70 | B | 1 |
| 16 | 56041 | Hanska | 70 | B | 0 |
| 17 | 56055 | Lake Crystal | 70 | B | 0 |
| 18 | 56063 | Madison Lake | 70 | B | 0 |
| 19 | 56065 | Mapleton | 70 | B | 0 |
| 20 | 56085 | Sleepy Eye | 70 | B | 0 |
| 21 | 56093 | Waseca | 70 | B | 0 |
| 22 | 56110 | Adrian | 70 | B | 0 |
| 23 | 56121 | Ceylon | 70 | B | 0 |
| 24 | 55921 | Caledonia | 69 | C | 2 |
| 25 | 55932 | Elgin | 69 | C | 2 |
| 26 | 55954 | Mabel | 69 | C | 2 |
| 27 | 55956 | Mazeppa | 69 | C | 2 |
| 28 | 56002 | Mankato | 69 | C | 3 |
| 29 | 56037 | Good Thunder | 69 | C | 2 |
| 30 | 56150 | Lakefield | 69 | C | 2 |
| 31 | 55924 | Claremont | 67 | C | 4 |
| 32 | 56161 | Okabena | 67 | C | 3 |
| 33 | 55018 | Dennison | 66 | C | 3 (1 health) |
| 34 | 55027 | Goodhue | 66 | C | 0 |
| 35 | 55933 | Elkton | 66 | C | 0 |
| 36 | 55939 | Harmony | 66 | C | 0 |
| 37 | 55946 | Kenyon | 66 | C | 0 |
| 38 | 55962 | Peterson | 66 | C | 0 |
| 39 | 55964 | Plainview | 66 | C | 0 |
| 40 | 55979 | Utica | 66 | C | 1 |
| 41 | 55983 | Wanamingo | 66 | C | 0 |
| 42 | 56014 | Bricelyn | 66 | C | 0 |
| 43 | 56020 | Conger | 66 | C | 0 |
| 44 | 56023 | Delavan | 66 | C | 0 |
| 45 | 56024 | Eagle Lake | 66 | C | 0 |
| 46 | 56025 | Easton | 66 | C | 1 |
| 47 | 56027 | Elmore | 66 | C | 0 |
| 48 | 56029 | Emmons | 66 | C | 0 |
| 49 | 56031 | Fairmont | 66 | C | 1 |
| 50 | 56032 | Freeborn | 66 | C | 0 |
Overview
Minnesota's 1st District encompasses 178 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (61/100).
167 EPA violations have been recorded across this district's water systems. 19 are health-based violations. About 37% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Consumer Confidence Report Rule - 45 violations
- Stage 1 DBP Rule - 39 violations
- Revised Total Coliform Rule - 29 violations
- Stage 2 DBP Rule - 15 violations
- Haloacetic Acids (HAA5) - 12 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 178 ZIP codes in Minnesota's 1st District.