Jo Daviess County, Illinois
10 ZIP codes · Avg score 65/100 · Grade C · Updated
ZipCheckup grade for Jo Daviess County: C.
A mixed picture - some signals here are worth your attention.
Water safety in Jo Daviess County is uneven - some of its 10 ZIP codes meet standards cleanly while others carry documented violations.
How Jo Daviess County Compares
How Jo Daviess County Compares
Jo Daviess County scores 3 points below the Illinois state average (68/100) and 8 points below 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: Jo Daviess County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.4 (asthma 9.9%, diabetes 13.2%)
Estimated additional annual cost per homeowner: $1,422, driven primarily by flood
71.9% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Jo Daviess County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 3 violations. Past 5 years: 4 total (4 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: $1,422
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
13,265 housing units in Jo Daviess 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 Jo Daviess County
Remediation costs are relatively manageable for most homeowners in Jo Daviess 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 Jo Daviess County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Jo Daviess County
6 community water systems serving Jo Daviess County.
- C
- C
- C
Systems with the most violations in Jo Daviess County
5 water systems with recorded EPA violations.
- C
- C
- C
All ZIP Codes in Jo Daviess County
10 ZIP codes tracked in Jo Daviess County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 61041 | Hanover | 66 | C | 2 (1 health) | $112K |
| 2 | 61036 | Galena | 63 | C | 8 (2 health) | $258K |
| 3 | 60125 | Carol Stream | — | — | — | |
| 4 | 61001 | Apple River | — | — | 5 | $261K |
| 5 | 61025 | East Dubuque | — | — | 20 | $174K |
| 6 | 61028 | Elizabeth | — | — | 2 (1 health) | $185K |
| 7 | 61059 | Nora | — | — | $74K | |
| 8 | 61075 | Scales Mound | — | — | 0 | $236K |
| 9 | 61085 | Stockton | — | — | 5 | $115K |
| 10 | 61087 | Warren | — | — | 5 | $110K |
Recommended Buyer Guides for Jo Daviess County
Editorial-only picks, screened against the EPA detections on file.
- Best Lead Paint Test Kits — 71.9% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Jo Daviess County, Illinois
Overview
Jo Daviess County in Illinois covers 10 tracked ZIP records with an average Home Safety Score of C (65/100) across 2 scored records.
7 of 8 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 2 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.