Franklin County, Illinois
16 ZIP codes · Avg score 68/100 · Grade C · Updated 2026-06-03
Water monitoring across Franklin County's 16 ZIP codes paints a mid-range picture — solid compliance in some zones, documented concerns in others; most violations on record are concentrated in specific prior years rather than spread evenly across the full compliance history, and the overall county grade has held steady in the middle tier without major shifts in either direction.
How Franklin County Compares
How Franklin County Compares
Franklin County scores 7 points above the Illinois state average (61/100) and 0 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Franklin County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.3 (asthma 10.9%, diabetes 13.9%)
Estimated additional annual cost per homeowner: $951, driven primarily by energy_code_gap
Infrastructure: 0.448% avg pipe failure probability, 73% of ZIPs at high risk
74.1% of homes built before 1978 (lead paint era)
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: $951
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
18,695 housing units in Franklin 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 Franklin County
Water safety remediation is a moderate expense relative to home values. Most homeowners can address issues through staged improvements over time.
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 Franklin 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 Franklin County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Rend Lake Inter-city Water System | 3,650 | 37 |
| 2 | Christopher | 3,072 | 36 |
| 3 | Akin Water District | 2,368 | 36 |
| 4 | Sesser | 2,505 | 35 |
| 5 | Benton | 8,104 | 34 |
23 total water systems serve Franklin County.
All ZIP Codes in Franklin County
16 ZIP codes tracked in Franklin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 62884 | Sesser | 82 | B | 3 | $94K |
| 2 | 62865 | Mulkeytown | 81 | B | 2 | $155K |
| 3 | 62822 | Christopher | 73 | B | 4 | $71K |
| 4 | 62819 | Buckner | 72 | B | 1 | $52K |
| 5 | 62825 | Coello | 72 | B | 0 | $72K |
| 6 | 62856 | Logan | 72 | B | 1 | $56K |
| 7 | 62983 | Royalton | 72 | B | 8 | $66K |
| 8 | 62890 | Thompsonville | 71 | B | 2 | $100K |
| 9 | 62891 | Valier | 71 | B | 2 | $69K |
| 10 | 62896 | West Frankfort | 70 | B | 0 | $88K |
| 11 | 62999 | Zeigler | 70 | B | 4 | $53K |
| 12 | 62897 | Whittington | 66 | C | 4 | $86K |
| 13 | 62812 | Benton | 54 | D | 30 (1 health) | $101K |
| 14 | 62836 | Ewing | 53 | D | 0 | $99K |
| 15 | 62840 | Frankfort Heights | 53 | D | 0 | — |
| 16 | 62874 | Orient | 50 | D | 0 | $51K |
Recommended Buyer Guides for Franklin County
Editorial-only picks, screened against the EPA detections on file.
- Best Water Filters for Lead — Lead above EPA action level in 2 ZIP codes
- Best Lead Paint Test Kits — 74.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Franklin County, Illinois
Overview
Franklin County in Illinois covers 16 ZIP codes with an average Home Safety Score of C (68/100).
11 of 16 ZIP codes have recorded EPA violations. 1 health-based violation 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.