Illinois — 6th District
119th Congress · 78 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-03
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03
Top Contaminants
ZIP Codes in This District
78 ZIP codes tracked in Illinois's 6th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 60522 | Hinsdale | 83 | B | 1 |
| 2 | 60117 | Bloomingdale | 81 | B | 1 |
| 3 | 60138 | Glen Ellyn | 81 | B | 1 |
| 4 | 60514 | Clarendon Hills | 78 | B | 0 |
| 5 | 60116 | Carol Stream | 77 | B | 4 |
| 6 | 60122 | Carol Stream | 77 | B | 4 |
| 7 | 60125 | Carol Stream | 77 | B | 4 |
| 8 | 60128 | Carol Stream | 77 | B | 4 |
| 9 | 60132 | Carol Stream | 77 | B | 4 |
| 10 | 60172 | Roselle | 77 | B | 2 |
| 11 | 60197 | Carol Stream | 77 | B | 4 |
| 12 | 60199 | Carol Stream | 77 | B | 4 |
| 13 | 60105 | Bensenville | 76 | B | 8 |
| 14 | 60108 | Bloomingdale | 76 | B | 1 |
| 15 | 60517 | Woodridge | 76 | B | 1 |
| 16 | 60143 | Itasca | 73 | B | 0 |
| 17 | 60190 | Winfield | 73 | B | 0 |
| 18 | 60515 | Downers Grove | 73 | B | 0 |
| 19 | 60516 | Downers Grove | 73 | B | 0 |
| 20 | 60521 | Hinsdale | 73 | B | 1 |
| 21 | 60566 | Naperville | 73 | B | 5 |
| 22 | 60148 | Lombard | 71 | B | 1 |
| 23 | 60559 | Westmont | 71 | B | 8 (2 health) |
| 24 | 60567 | Naperville | 71 | B | 5 |
| 25 | 60136 | Gilberts | 70 | B | 0 |
| 26 | 60139 | Glendale Heights | 70 | B | 1 |
| 27 | 60187 | Wheaton | 70 | B | 4 |
| 28 | 60189 | Wheaton | 70 | B | 4 |
| 29 | 60555 | Warrenville | 70 | B | 4 |
| 30 | 60561 | Darien | 70 | B | 10 |
| 31 | 60181 | Villa Park | 69 | C | 0 |
| 32 | 60119 | Elburn | 68 | C | 1 |
| 33 | 60399 | Wood Dale | 68 | C | 2 |
| 34 | 60563 | Naperville | 68 | C | 5 |
| 35 | 60564 | Naperville | 68 | C | 5 |
| 36 | 60188 | Carol Stream | 67 | C | 4 |
| 37 | 60106 | Bensenville | 66 | C | 8 |
| 38 | 60137 | Glen Ellyn | 66 | C | 1 |
| 39 | 60110 | Carpentersville | 65 | C | 0 |
| 40 | 60126 | Elmhurst | 65 | C | 0 |
| 41 | 60183 | Wasco | 65 | C | 2 |
| 42 | 60532 | Lisle | 65 | C | 3 |
| 43 | 60542 | North Aurora | 65 | C | 0 |
| 44 | 60101 | Addison | 64 | C | 15 (1 health) |
| 45 | 60109 | Burlington | 64 | C | 1 |
| 46 | 60527 | Willowbrook | 64 | C | 18 |
| 47 | 60157 | Medinah | 63 | C | 0 |
| 48 | 60540 | Naperville | 63 | C | 5 |
| 49 | 60565 | Naperville | 63 | C | 5 |
| 50 | 60554 | Sugar Grove | 62 | C | 10 |
Overview
Illinois's 6th District serving an estimated 4,501,868 residents encompasses 78 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (60/100).
634 EPA violations have been recorded across this district's water systems. 7 are health-based violations. About 77% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Atrazine — 80 violations
- Stage 1 DBP Rule — 74 violations
- Lead — 59 violations
- Surface Water Treatment Rule — 53 violations
- Total Trihalomethanes (TTHM) — 51 violations
Housing Context
Homes in this district were built on average around 1978 (~48 years old). Older homes may have lead pipes or solder — consider a water filter if your home predates 1986.
Lead Alert: 11 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 78 ZIP codes in Illinois's 6th District.