Adams County, Illinois
19 ZIP codes · Avg score 57/100 · Grade C · Updated 2026-06-03
While Adams County avoids the worst tiers, a portion of its 19 ZIP codes have logged violations.
How Adams County Compares
How Adams County Compares
Adams 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: Adams County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.9 (asthma 10.3%, diabetes 12.1%)
Estimated additional annual cost per homeowner: $1,242, driven primarily by energy_code_gap
Infrastructure: 0.418% avg pipe failure probability, 68% of ZIPs at high risk
72.7% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
↑ Worsening trendEPA violation counts by year across Adams County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 3 violations. Past 5 years: 7 total (7 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
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,242
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
30,497 housing units in Adams 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 Adams County
Remediation costs are relatively manageable for most homeowners in Adams 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 Adams 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 Adams County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Loraine | 300 | 11 |
| 2 | Quincy | 42,000 | 6 |
| 3 | Mill Creek Pwd | 5,755 | 6 |
| 4 | Il Veterans Home (quincy) | 401 | 6 |
| 5 | Expressway Mhp | 98 | 6 |
20 total water systems serve Adams County.
All ZIP Codes in Adams County
19 ZIP codes tracked in Adams County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 62339 | Golden | 70 | B | 0 | $129K |
| 2 | 62347 | Liberty | 70 | B | 0 | $199K |
| 3 | 62351 | Mendon | 70 | B | 0 | $151K |
| 4 | 62360 | Payson | 70 | B | 0 | $126K |
| 5 | 62348 | Lima | 66 | C | 2 | $113K |
| 6 | 62346 | La Prairie | 65 | C | 1 (1 health) | $138K |
| 7 | 62376 | Ursa | 65 | C | 0 | $157K |
| 8 | 62365 | Plainville | 64 | C | 1 | $123K |
| 9 | 62306 | Quincy | 62 | C | 2 | — |
| 10 | 62320 | Camp Point | 62 | C | 4 (3 health) | $169K |
| 11 | 62301 | Quincy | 56 | C | 2 | $124K |
| 12 | 62305 | Quincy | 56 | C | 2 | $204K |
| 13 | 62324 | Clayton | 55 | C | 0 | $101K |
| 14 | 62359 | Paloma | 54 | D | 2 | — |
| 15 | 62325 | Coatsburg | 40 | D | 0 | $134K |
| 16 | 62338 | Fowler | 40 | D | 0 | $173K |
| 17 | 62344 | Huntsville | 40 | D | 0 | $72K |
| 18 | 62375 | Timewell | 40 | D | 0 | $136K |
| 19 | 62349 | Loraine | 29 | F | 11 (1 health) | $97K |
Recommended Buyer Guides for Adams 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 Lead Paint Test Kits — 72.7% 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 Adams County, Illinois
Overview
Adams County in Illinois covers 19 ZIP codes with an average Home Safety Score of C (57/100).
9 of 19 ZIP codes have recorded EPA violations. 5 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.