Madison County, Kentucky
8 ZIP codes · Avg score 62/100 · Grade C · Updated 2026-06-03
Tracking 8 ZIP codes in Madison County reveals a mixed picture — tap water quality varies meaningfully by location.
How Madison County Compares
How Madison County Compares
Madison County scores 1 points above the Kentucky state average (61/100) and 6 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Madison County, Kentucky
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Estimated additional annual cost per homeowner: $871, driven primarily by flood
Infrastructure: 0.297% avg pipe failure probability
43.2% of homes built before 1978 (lead paint era)
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: $871
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
41,036 housing units in Madison 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 Madison County
Remediation costs are relatively manageable for most homeowners in Madison 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.
Water Systems with Most Violations
Top 5 systems in Madison County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | RICHMOND UTILITIES | 35,640 | 4 |
| 2 | Madison Company Utilities District | 25,120 | 4 |
| 3 | Kirksville Water Association | 5,940 | 4 |
| 4 | Southern Madison Water District | 14,707 | 3 |
| 5 | GARRARD CO WATER ASSOC INC | 14,806 | 3 |
9 total water systems serve Madison County.
All ZIP Codes in Madison County
8 ZIP codes tracked in Madison County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 40403 | Berea | 77 | B | 2 | $181K |
| 2 | 40476 | Richmond | 71 | B | 1 (1 health) | — |
| 3 | 40475 | Richmond | 64 | C | 1 (1 health) | $233K |
| 4 | 40385 | Waco | 63 | C | 0 | $176K |
| 5 | 40461 | Paint Lick | 63 | C | 0 | $191K |
| 6 | 40405 | Bighill | 53 | D | 0 | — |
| 7 | 40481 | Sandgap | 53 | D | 0 | $128K |
| 8 | 40488 | Waneta | 53 | D | 0 | — |
Recommended Buyer Guides for Madison 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 Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Madison County, Kentucky
Overview
Madison County in Kentucky covers 8 ZIP codes with an average Home Safety Score of C (62/100).
3 of 8 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← Back to Kentucky 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.