Macoupin County, Illinois
21 ZIP codes · Avg score 71/100 · Grade B · Updated 2026-06-03
Water systems in Macoupin County serve 21 ZIP codes with few reported safety events.
How Macoupin County Compares
How Macoupin County Compares
Macoupin County scores 10 points above the Illinois state average (61/100) and 3 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Macoupin County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.3 (asthma 10.6%, diabetes 12.7%)
Estimated additional annual cost per homeowner: $909, driven primarily by energy_code_gap
Infrastructure: 0.451% avg pipe failure probability, 70% of ZIPs at high risk
70.7% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Macoupin County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 31 violations. Past 5 years: 55 total (55 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: $909
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
22,329 housing units in Macoupin 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 Macoupin County
Remediation costs are relatively manageable for most homeowners in Macoupin 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 Macoupin 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 Macoupin County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Palmyra | 605 | 40 |
| 2 | South Palmyra Water Commission | 838 | 23 |
| 3 | Scottville Rural Water Company, Inc. | 695 | 23 |
| 4 | Nilwood | 1,394 | 21 |
| 5 | Benld | 1,612 | 18 |
32 total water systems serve Macoupin County.
All ZIP Codes in Macoupin County
21 ZIP codes tracked in Macoupin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 62630 | Chesterfield | 83 | B | 0 | $123K |
| 2 | 62014 | Bunker Hill | 82 | B | 2 | $188K |
| 3 | 62685 | Shipman | 82 | B | 3 | $117K |
| 4 | 62640 | Girard | 81 | B | 1 | $166K |
| 5 | 62672 | Nilwood | 81 | B | 4 | $44K |
| 6 | 62690 | Virden | 81 | B | 1 | $112K |
| 7 | 62009 | Benld | 80 | B | 3 | $84K |
| 8 | 62012 | Brighton | 80 | B | 4 | $166K |
| 9 | 62093 | Wilsonville | 80 | B | 3 | $90K |
| 10 | 62626 | Carlinville | 80 | B | 6 | $133K |
| 11 | 62033 | Gillespie | 79 | B | 9 (1 health) | $105K |
| 12 | 62088 | Staunton | 76 | B | 1 | $143K |
| 13 | 62023 | Eagarville | 67 | C | 17 (1 health) | $66K |
| 14 | 62085 | Sawyerville | 67 | C | 5 (1 health) | $82K |
| 15 | 62030 | Fidelity | 63 | C | 0 | $93K |
| 16 | 62069 | Mount Olive | 63 | C | 0 | $106K |
| 17 | 62649 | Hettick | 63 | C | 15 (7 health) | $139K |
| 18 | 62667 | Modesto | 56 | C | 17 (10 health) | $156K |
| 19 | 62079 | Piasa | 53 | D | 0 | $234K |
| 20 | 62683 | Scottville | 53 | D | 0 | — |
| 21 | 62674 | Palmyra | 50 | D | 23 (15 health) | $103K |
Recommended Buyer Guides for Macoupin County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 70.7% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Macoupin County, Illinois
Overview
Macoupin County in Illinois covers 21 ZIP codes with an average Home Safety Score of B (71/100).
16 of 21 ZIP codes have recorded EPA violations. 35 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.