DuPage County, Illinois
51 ZIP codes · Avg score 76/100 · Grade B · Updated
ZipCheckup grade for DuPage County: B.
This ZIP looks solid, with a few items worth a quick check.
Water systems in DuPage County serve 51 ZIP codes with few reported safety events.
How DuPage County Compares
How DuPage County Compares
DuPage County scores 8 points above the Illinois state average (68/100) and 3 points above the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: DuPage County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 10.7 (asthma 8.9%, diabetes 10%)
Estimated additional annual cost per homeowner: $2,135, driven primarily by flood
66.2% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across DuPage County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 3 violations. Past 5 years: 6 total (6 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,135
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
365,885 housing units in DuPage County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in DuPage County
Remediation costs are relatively manageable for most homeowners in DuPage County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for DuPage County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving DuPage County
8 community water systems serving DuPage County.
- B
- B
- B
- B
- B
- B
Show all 8 water systems
- B
- B
54 total water systems serve DuPage County.
Systems with the most violations in DuPage County
5 water systems with recorded EPA violations.
- C
- B
- B
- B
- B
All ZIP Codes in DuPage County
51 ZIP codes tracked in DuPage County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 60187 | Wheaton | 82 | B | 2 | $432K |
| 2 | 60516 | Downers Grove | 82 | B | 2 | $423K |
| 3 | 60523 | Oak Brook | 82 | B | 4 | $733K |
| 4 | 60157 | Medinah | 81 | B | 4 | $513K |
| 5 | 60540 | Naperville | 81 | B | 17 | $505K |
| 6 | 60555 | Warrenville | 81 | B | 18 | $272K |
| 7 | 60564 | Naperville | 81 | B | 18 | $550K |
| 8 | 60565 | Naperville | 81 | B | 17 | $490K |
| 9 | 60126 | Elmhurst | 80 | B | 7 | $528K |
| 10 | 60143 | Itasca | 80 | B | 4 | $387K |
| 11 | 60517 | Woodridge | 80 | B | 18 | $342K |
| 12 | 60106 | Bensenville | 79 | B | 6 | $266K |
| 13 | 60181 | Villa Park | 79 | B | 7 | $295K |
| 14 | 60191 | Wood Dale | 79 | B | 6 | $308K |
| 15 | 60439 | Lemont | 79 | B | 44 (1 health) | $467K |
| 16 | 60532 | Lisle | 79 | B | 19 | $388K |
| 17 | 60563 | Naperville | 79 | B | 21 | $423K |
| 18 | 60188 | Carol Stream | 78 | B | 10 | $312K |
| 19 | 60189 | Wheaton | 78 | B | 22 | $467K |
| 20 | 60514 | Clarendon Hills | 78 | B | 10 (1 health) | $568K |
| 21 | 60108 | Bloomingdale | 77 | B | 14 | $367K |
| 22 | 60561 | Darien | 77 | B | 10 | $389K |
| 23 | 60172 | Roselle | 76 | B | 14 | $323K |
| 24 | 60101 | Addison | 75 | B | 9 | $315K |
| 25 | 60559 | Westmont | 75 | B | 17 (1 health) | $356K |
| 26 | 60515 | Downers Grove | 74 | B | 12 (1 health) | $453K |
| 27 | 60103 | Bartlett | 73 | B | 21 (1 health) | $353K |
| 28 | 60139 | Glendale Heights | 73 | B | 19 | $249K |
| 29 | 60521 | Hinsdale | 69 | C | 25 (1 health) | $988K |
| 30 | 60185 | West Chicago | 67 | C | 64 | $314K |
| 31 | 60190 | Winfield | 67 | C | 48 | $368K |
| 32 | 60148 | Lombard | 61 | C | 7 | $329K |
| 33 | 60137 | Glen Ellyn | 58 | C | 17 | $491K |
| 34 | 60105 | Bensenville | — | — | — | |
| 35 | 60116 | Carol Stream | — | — | — | |
| 36 | 60117 | Bloomingdale | — | — | — | |
| 37 | 60128 | Carol Stream | — | — | — | |
| 38 | 60132 | Carol Stream | — | — | — | |
| 39 | 60138 | Glen Ellyn | — | — | — | |
| 40 | 60186 | West Chicago | — | — | — | |
| 41 | 60197 | Carol Stream | — | — | — | |
| 42 | 60199 | Carol Stream | — | — | — | |
| 43 | 60399 | Wood Dale | — | — | — | |
| 44 | 60519 | Eola | — | — | 0 | $247K |
| 45 | 60522 | Hinsdale | — | — | — | |
| 46 | 60566 | Naperville | — | — | — | |
| 47 | 60567 | Naperville | — | — | — | |
| 48 | 60569 | Aurora | — | — | — | |
| 49 | 60598 | Aurora | — | — | — | |
| 50 | 60599 | Fox Valley | — | — | — | |
| 51 | 60680 | Chicago | — | — | — |
Recommended Buyer Guides for DuPage County
Retailer arrangements don't shape what appears here - the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 66.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for DuPage County, Illinois
Overview
DuPage County in Illinois covers 51 tracked ZIP records with an average Home Safety Score of B (76/100) across 33 scored records.
33 of 34 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 5 health-based violations appear in the available health breakdown.
← Back to Illinois Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.