Illinois — 12th District
119th Congress · 258 ZIP codes · Avg score 67/100 · 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 Illinois's 12th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 62970 | Olmsted | 94 | A | 5 |
| 2 | 62992 | Ullin | 92 | A | 3 |
| 3 | 62976 | Pulaski | 91 | A | 7 (1 health) |
| 4 | 62953 | Joppa | 86 | A | 8 (3 health) |
| 5 | 62914 | Cairo | 85 | A | 0 |
| 6 | 62956 | Karnak | 85 | A | 2 |
| 7 | 62219 | Beckemeyer | 83 | B | 0 |
| 8 | 62233 | Chester | 83 | B | 0 |
| 9 | 62271 | Okawville | 83 | B | 0 |
| 10 | 62401 | Effingham | 83 | B | 0 |
| 11 | 62449 | Oblong | 83 | B | 0 |
| 12 | 62452 | Parkersburg | 83 | B | 0 |
| 13 | 62849 | Iuka | 83 | B | 0 |
| 14 | 62855 | Lancaster | 83 | B | 0 |
| 15 | 62871 | Omaha | 83 | B | 0 |
| 16 | 62898 | Woodlawn | 83 | B | 0 |
| 17 | 62905 | Alto Pass | 83 | B | 0 |
| 18 | 62916 | Campbell Hill | 83 | B | 0 |
| 19 | 62919 | Cave In Rock | 83 | B | 0 |
| 20 | 62920 | Cobden | 83 | B | 0 |
| 21 | 62977 | Raleigh | 83 | B | 1 |
| 22 | 62250 | Hoffman | 82 | B | 2 |
| 23 | 62450 | Olney | 82 | B | 318 (1 health) |
| 24 | 62806 | Albion | 82 | B | 2 |
| 25 | 62854 | Kinmundy | 82 | B | 3 |
| 26 | 62875 | Patoka | 82 | B | 2 |
| 27 | 62963 | Mound City | 82 | B | 0 |
| 28 | 62814 | Bluford | 81 | B | 5 |
| 29 | 62964 | Mounds | 81 | B | 38 |
| 30 | 62982 | Rosiclare | 81 | B | 2 (2 health) |
| 31 | 62217 | Baldwin | 80 | B | 3 |
| 32 | 62292 | Tilden | 80 | B | 3 |
| 33 | 62445 | Montrose | 80 | B | 0 |
| 34 | 62877 | Richview | 80 | B | 3 |
| 35 | 62882 | Sandoval | 80 | B | 3 |
| 36 | 62979 | Ridgway | 80 | B | 3 |
| 37 | 62987 | Stonefort | 80 | B | 6 |
| 38 | 62410 | Allendale | 79 | B | 8 |
| 39 | 62420 | Casey | 79 | B | 8 (3 health) |
| 40 | 62441 | Marshall | 79 | B | 5 |
| 41 | 62832 | Du Quoin | 79 | B | 11 (1 health) |
| 42 | 62841 | Freeman Spur | 79 | B | 2 (1 health) |
| 43 | 62858 | Louisville | 79 | B | 5 |
| 44 | 62862 | Mill Shoals | 79 | B | 5 |
| 45 | 62870 | Odin | 79 | B | 6 |
| 46 | 62932 | Elkville | 79 | B | 8 (1 health) |
| 47 | 62951 | Johnston City | 79 | B | 4 (1 health) |
| 48 | 62248 | Hecker | 78 | B | 13 (1 health) |
| 49 | 62425 | Dundas | 78 | B | 7 (4 health) |
| 50 | 62839 | Flora | 78 | B | 7 |
Overview
Illinois's 12th District serving an estimated 1,671,625 residents encompasses 258 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (67/100).
2469 EPA violations have been recorded across this district's water systems. 358 are health-based violations. About 56% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Total Trihalomethanes (TTHM) — 470 violations
- Haloacetic Acids (HAA5) — 390 violations
- Consumer Confidence Report Rule — 322 violations
- Surface Water Treatment Rule — 224 violations
- Stage 1 DBP Rule — 183 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: 9 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 258 ZIP codes in Illinois's 12th District.