Will County, Illinois
28 ZIP codes · Avg score 75/100 · Grade B · Updated
ZipCheckup grade for Will County: B.
This ZIP looks solid, with a few items worth a quick check.
Will County's tap water quality puts it in the upper tier nationally; the 28 ZIP codes here record few health-based violations.
How Will County Compares
How Will County Compares
Will County scores 7 points above the Illinois state average (68/100) and 2 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: Will County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.8 (asthma 9.7%, diabetes 10.7%)
Estimated additional annual cost per homeowner: $2,170, driven primarily by flood
41.3% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Will County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 46 violations. Past 5 years: 78 total (78 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
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: $2,170
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
226,386 housing units in Will 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 Will County
Remediation costs are relatively manageable for most homeowners in Will 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 Will County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Will County
8 community water systems serving Will County.
- B
- B
- B
- B
- B
- B
Show all 8 water systems
- B
48 total water systems serve Will County.
Systems with the most violations in Will County
5 water systems with recorded EPA violations.
- B
- C
- C
- C
- B
All ZIP Codes in Will County
28 ZIP codes tracked in Will County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 60408 | Braidwood | 82 | B | 4 | $220K |
| 2 | 60446 | Romeoville | 82 | B | 3 (1 health) | $245K |
| 3 | 60442 | Manhattan | 81 | B | 31 | $340K |
| 4 | 60490 | Bolingbrook | 81 | B | 5 | $379K |
| 5 | 60586 | Plainfield | 81 | B | 9 (1 health) | $298K |
| 6 | 60401 | Beecher | 80 | B | 20 (1 health) | $239K |
| 7 | 60404 | Shorewood | 80 | B | 15 (1 health) | $320K |
| 8 | 60440 | Bolingbrook | 80 | B | 19 (1 health) | $262K |
| 9 | 60491 | Homer Glen | 80 | B | 42 (1 health) | $405K |
| 10 | 60432 | Joliet | 79 | B | 47 (1 health) | $185K |
| 11 | 60544 | Plainfield | 79 | B | 12 (1 health) | $312K |
| 12 | 60585 | Plainfield | 79 | B | 23 | $416K |
| 13 | 60451 | New Lenox | 78 | B | 79 (1 health) | $373K |
| 14 | 60417 | Crete | 77 | B | 22 (1 health) | $226K |
| 15 | 60481 | Wilmington | 77 | B | 16 | $225K |
| 16 | 60448 | Mokena | 75 | B | 51 | $370K |
| 17 | 60435 | Joliet | 70 | B | 45 (2 health) | $217K |
| 18 | 60441 | Lockport | 69 | C | 81 (2 health) | $287K |
| 19 | 60431 | Joliet | 68 | C | 53 (2 health) | $275K |
| 20 | 60423 | Frankfort | 67 | C | 67 (2 health) | $377K |
| 21 | 60433 | Joliet | 67 | C | 61 (3 health) | $168K |
| 22 | 60436 | Joliet | 67 | C | 53 (2 health) | $171K |
| 23 | 60449 | Monee | 67 | C | 46 (2 health) | $270K |
| 24 | 60410 | Channahon | 63 | C | 16 (1 health) | $294K |
| 25 | 60403 | Crest Hill | 55 | C | 40 (2 health) | $223K |
| 26 | 60421 | Elwood | — | — | 36 (1 health) | $251K |
| 27 | 60434 | Joliet | — | — | — | |
| 28 | 60503 | Aurora | — | — | 23 | $311K |
Recommended Buyer Guides for Will County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Water Filters for Lead — Lead above EPA action level in 3 ZIP codes
- 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 Will County, Illinois
Overview
Will County in Illinois covers 28 tracked ZIP records with an average Home Safety Score of B (75/100) across 25 scored records.
27 of 27 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 7 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.