Warren County, Kentucky
10 ZIP codes · Avg score 63/100 · Grade C · Updated
ZipCheckup grade for Warren County: C.
A mixed picture - some signals here are worth your attention.
Current EPA records place Warren County in the middle tier for drinking water safety, with 10 ZIP codes showing a range of outcomes.
How Warren County Compares
How Warren County Compares
Warren County scores 6 points below the Kentucky state average (69/100) and 10 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Warren 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: $833, driven primarily by flood
45.6% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
→ Stable trendEPA violation counts by year across Warren County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 18 violations. Past 5 years: 39 total (39 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $833
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
60,105 housing units in Warren 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 Warren County
Remediation costs are relatively manageable for most homeowners in Warren 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 serving Warren County
8 community water systems serving Warren County.
- C
- C
- C
- C
- C
- C
Show all 8 water systems
- C
- C
11 total water systems serve Warren County.
Systems with the most violations in Warren County
2 water systems with recorded EPA violations.
- C
- C
All ZIP Codes in Warren County
10 ZIP codes tracked in Warren County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 42103 | Bowling Green | 67 | C | 0 | $304K |
| 2 | 42104 | Bowling Green | 67 | C | 0 | $283K |
| 3 | 42122 | Alvaton | 67 | C | 0 | $294K |
| 4 | 42170 | Woodburn | 67 | C | 0 | $307K |
| 5 | 42274 | Rockfield | 67 | C | 0 | $172K |
| 6 | 42159 | Oakland | 58 | C | 14 (13 health) | $263K |
| 7 | 42101 | Bowling Green | 57 | C | 16 (14 health) | $188K |
| 8 | 42171 | Smiths Grove | 57 | C | 16 (14 health) | $173K |
| 9 | 42102 | Bowling Green | — | — | — | |
| 10 | 42128 | Drake | — | — | — |
Recommended Buyer Guides for Warren County
Strictly editorial - no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Warren County, Kentucky
Overview
Warren County in Kentucky covers 10 tracked ZIP records with an average Home Safety Score of C (63/100) across 8 scored records.
3 of 8 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 14 health-based violations appear in the available health breakdown.
← Back to Kentucky Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.