Hopkins County, Kentucky
15 ZIP codes · Avg score 68/100 · Grade C · Updated 2026-06-04
Hopkins County: 15 ZIP codes, mid-range safety grade.
How Hopkins County Compares
How Hopkins County Compares
Hopkins County scores 7 points above the Kentucky state average (61/100) and 0 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Hopkins 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: $768, driven primarily by energy_code_gap
Infrastructure: 0.369% avg pipe failure probability, 21% of ZIPs at high risk
60.9% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Hopkins County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 21 violations. Past 5 years: 42 total (42 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.
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: $768
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
24,458 housing units in Hopkins 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 Hopkins County
Remediation costs are relatively manageable for most homeowners in Hopkins 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 Hopkins County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | North Hopkins Water District | 3,725 | 9 |
| 2 | MADISONVILLE LIGHT & WATER | 28,102 | 8 |
| 3 | Nebo Water District | 4,702 | 8 |
| 4 | Hanson Water System | 2,157 | 7 |
| 5 | Slaughters Water Works | 659 | 6 |
23 total water systems serve Hopkins County.
All ZIP Codes in Hopkins County
15 ZIP codes tracked in Hopkins County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 42464 | White Plains | 83 | B | 0 | $103K |
| 2 | 42410 | Earlington | 82 | B | 2 | $64K |
| 3 | 42413 | Hanson | 78 | B | 5 (4 health) | $150K |
| 4 | 42442 | Nortonville | 78 | B | 0 | $109K |
| 5 | 42408 | Dawson Springs | 75 | B | 0 | $82K |
| 6 | 42440 | Mortons Gap | 75 | B | 0 | $99K |
| 7 | 42456 | Slaughters | 75 | B | 1 | $161K |
| 8 | 42431 | Madisonville | 70 | B | 1 | $152K |
| 9 | 42441 | Nebo | 70 | B | 2 (2 health) | $136K |
| 10 | 42436 | Manitou | 63 | C | 0 | $177K |
| 11 | 42040 | Farmington | 53 | D | 0 | $183K |
| 12 | 42063 | Lynnville | 53 | D | 0 | — |
| 13 | 42217 | Crofton | 53 | D | 0 | $130K |
| 14 | 42344 | Graham | 53 | D | 0 | $81K |
| 15 | 42453 | Saint Charles | 53 | D | 0 | $91K |
Recommended Buyer Guides for Hopkins County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 60.9% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Hopkins County, Kentucky
Overview
Hopkins County in Kentucky covers 15 ZIP codes with an average Home Safety Score of C (68/100).
5 of 15 ZIP codes have recorded EPA violations. 6 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.