Clarke County, Alabama
9 ZIP codes · Avg score 78/100 · Grade B · Updated 2026-06-03
Based on current EPA data, Clarke County's 9 ZIP codes maintain an above-average drinking water safety record.
How Clarke County Compares
How Clarke County Compares
Clarke County scores 5 points above the Alabama state average (73/100) and 10 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Clarke County, Alabama
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.8 (asthma 10.8%, diabetes 18.6%)
Estimated additional annual cost per homeowner: $3,494, driven primarily by sea_level
Infrastructure: 0.359% avg pipe failure probability, 22% of ZIPs at high risk
58.6% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Clarke County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 7 violations. Past 5 years: 21 total (21 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: $3,494
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,379 housing units in Clarke 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 Clarke County
Remediation costs are relatively manageable for most homeowners in Clarke 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 Clarke 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 Clarke County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Cwm Water Authority | 1,749 | 19 |
| 2 | Thomasville Water Works & Sewer Board | 6,897 | 11 |
| 3 | PINE HILL (TOWN OF) | 2,361 | 11 |
| 4 | North Clarke Water Authority | 984 | 11 |
| 5 | Mid-central Water Authority | 2,325 | 3 |
11 total water systems serve Clarke County.
All ZIP Codes in Clarke County
9 ZIP codes tracked in Clarke County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 36451 | Grove Hill | 92 | A | 2 | $131K |
| 2 | 36545 | Jackson | 87 | A | 3 | $141K |
| 3 | 36446 | Fulton | 86 | A | 3 (3 health) | $109K |
| 4 | 36784 | Thomasville | 83 | B | 11 (3 health) | $122K |
| 5 | 36524 | Coffeeville | 78 | B | 2 (1 health) | $99K |
| 6 | 36436 | Dickinson | 73 | B | 19 (9 health) | $135K |
| 7 | 36921 | Toxey | 73 | B | 0 | $118K |
| 8 | 36482 | Whatley | 66 | C | 0 | $76K |
| 9 | 36727 | Campbell | 66 | C | 0 | $10K |
Recommended Buyer Guides for Clarke County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 58.6% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Clarke County, Alabama
Overview
Clarke County in Alabama covers 9 ZIP codes with an average Home Safety Score of B (78/100).
6 of 9 ZIP codes have recorded EPA violations. 16 health-based violations have been documented.
← Back to Alabama 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.