Champaign County, Illinois
34 ZIP codes · Avg score 57/100 · Grade C · Updated 2026-06-03
Champaign County shows moderate water quality across its 34 ZIP codes — some areas carry violations worth monitoring.
How Champaign County Compares
How Champaign County Compares
Champaign County scores 4 points below the Illinois state average (61/100) and 11 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Champaign 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 (asthma 10.1%, diabetes 9.8%)
Estimated additional annual cost per homeowner: $947, driven primarily by energy_code_gap
Infrastructure: 0.378% avg pipe failure probability, 41% of ZIPs at high risk
65.9% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Champaign County water systems. Health-based shown in red, total in blue.
Peak year: 2025 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
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $947
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
93,741 housing units in Champaign 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 Champaign County
Remediation costs are relatively manageable for most homeowners in Champaign 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 Champaign County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Champaign County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | IL AMERICAN-CHAMPAIGN | 150,000 | 23 |
| 2 | U of I-champaign | 13,000 | 18 |
| 3 | Shadow Wood Mhp | 680 | 12 |
| 4 | Mahomet | 6,580 | 11 |
| 5 | Sangamon Valley Pwd | 5,300 | 11 |
30 total water systems serve Champaign County.
All ZIP Codes in Champaign County
34 ZIP codes tracked in Champaign County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 61843 | Fisher | 70 | B | 0 | $184K |
| 2 | 61816 | Broadlands | 68 | C | 4 | $138K |
| 3 | 61853 | Mahomet | 67 | C | 6 | $282K |
| 4 | 61801 | Urbana | 66 | C | 2 | $184K |
| 5 | 61802 | Urbana | 66 | C | 2 | $158K |
| 6 | 61822 | Champaign | 66 | C | 2 | $265K |
| 7 | 61862 | Penfield | 66 | C | 1 | $134K |
| 8 | 61864 | Philo | 66 | C | 0 | $204K |
| 9 | 61871 | Royal | 66 | C | 1 | $145K |
| 10 | 61875 | Seymour | 66 | C | 3 | $270K |
| 11 | 61847 | Gifford | 63 | C | 3 | $178K |
| 12 | 61803 | Urbana | 62 | C | 2 | — |
| 13 | 61824 | Champaign | 62 | C | 2 | — |
| 14 | 61825 | Champaign | 62 | C | 2 | — |
| 15 | 61826 | Champaign | 62 | C | 2 | — |
| 16 | 60949 | Ludlow | 61 | C | 4 | $99K |
| 17 | 61821 | Champaign | 61 | C | 2 | $175K |
| 18 | 61852 | Longview | 61 | C | 4 (1 health) | $262K |
| 19 | 61849 | Homer | 59 | C | 0 | $156K |
| 20 | 61866 | Rantoul | 59 | C | 5 | $112K |
| 21 | 61820 | Champaign | 56 | C | 2 | $176K |
| 22 | 61859 | Ogden | 55 | C | 0 | $174K |
| 23 | 61880 | Tolono | 54 | D | 4 (1 health) | $227K |
| 24 | 61840 | Dewey | 53 | D | 0 | $270K |
| 25 | 61874 | Savoy | 53 | D | 0 | $274K |
| 26 | 62479 | Wheeler | 53 | D | 0 | $172K |
| 27 | 61878 | Thomasboro | 52 | D | 4 | $116K |
| 28 | 61873 | Saint Joseph | 45 | D | 0 | $246K |
| 29 | 61877 | Sidney | 45 | D | 0 | $200K |
| 30 | 61812 | Armstrong | 40 | D | 0 | $144K |
| 31 | 61815 | Bondville | 40 | D | 0 | $159K |
| 32 | 61845 | Foosland | 40 | D | 0 | $172K |
| 33 | 61863 | Pesotum | 40 | D | 0 | $179K |
| 34 | 61872 | Sadorus | 40 | D | 0 | $173K |
Recommended Buyer Guides for Champaign 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 Lead Paint Test Kits — 65.9% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Champaign County, Illinois
Overview
Champaign County in Illinois covers 34 ZIP codes with an average Home Safety Score of C (57/100).
20 of 34 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← Back to Illinois water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.