Piatt County, Illinois
11 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-03
Current EPA records place Piatt County in the middle tier for drinking water safety, with 11 ZIP codes showing a range of outcomes.
How Piatt County Compares
How Piatt County Compares
Piatt County scores 1 points below the Illinois state average (61/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Piatt County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.8 (asthma 10%, diabetes 10.9%)
Estimated additional annual cost per homeowner: $975, driven primarily by energy_code_gap
Infrastructure: 0.433% avg pipe failure probability, 82% of ZIPs at high risk
77.8% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Piatt County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 2 violations. Past 5 years: 3 total (3 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: $975
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
7,735 housing units in Piatt 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 Piatt County
Remediation costs are relatively manageable for most homeowners in Piatt 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 Piatt 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 Piatt County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | De Land | 446 | 11 |
| 2 | Atwood | 1,155 | 7 |
| 3 | Garrett | 198 | 7 |
| 4 | Bement | 1,661 | 3 |
| 5 | Long Creek Township Public Water System | 7,850 | 1 |
12 total water systems serve Piatt County.
All ZIP Codes in Piatt County
11 ZIP codes tracked in Piatt County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 61854 | Mansfield | 70 | B | 0 | $162K |
| 2 | 61856 | Monticello | 70 | B | 0 | $215K |
| 3 | 61813 | Bement | 65 | C | 3 (1 health) | $104K |
| 4 | 61830 | Cisco | 65 | C | 1 (1 health) | $135K |
| 5 | 61839 | De Land | 65 | C | 11 (1 health) | $110K |
| 6 | 61818 | Cerro Gordo | 62 | C | 1 | $113K |
| 7 | 61913 | Atwood | 56 | C | 7 | $125K |
| 8 | 61884 | White Heath | 55 | C | 1 | $259K |
| 9 | 61929 | Hammond | 55 | C | 1 | $110K |
| 10 | 61936 | La Place | 53 | D | 0 | $81K |
| 11 | 61855 | Milmine | 40 | D | 0 | — |
Recommended Buyer Guides for Piatt County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 77.8% 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
Deep Dive Reports
Detailed analysis for Piatt County, Illinois
Overview
Piatt County in Illinois covers 11 ZIP codes with an average Home Safety Score of C (60/100).
7 of 11 ZIP codes have recorded EPA violations. 3 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.