Houston County, Alabama
12 ZIP codes · Avg score 87/100 · Grade A · Updated 2026-06-03
Water utilities serving Houston County's 12 ZIP codes have built a consistent compliance record — the county's above-average grade reflects years of data showing low violation rates and no systemic health concerns.
How Houston County Compares
How Houston County Compares
Houston County scores 14 points above the Alabama state average (73/100) and 19 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Houston County, Alabama
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 10.4%, diabetes 15.7%)
Estimated additional annual cost per homeowner: $2,799, driven primarily by sea_level
Infrastructure: 0.302% avg pipe failure probability, 8% of ZIPs at high risk
49.8% 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: $2,799
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
50,616 housing units in Houston 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 Houston County
Remediation costs are relatively manageable for most homeowners in Houston 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 Houston 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 Houston County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Dothan Utilities, | 97,146 | 37 |
| 2 | Kinsey Water System | 2,010 | 30 |
| 3 | Houston County Water Authority | 4,902 | 25 |
| 4 | Cowarts Water System | 2,262 | 16 |
| 5 | Cottonwood Water Works | 3,570 | 14 |
12 total water systems serve Houston County.
All ZIP Codes in Houston County
12 ZIP codes tracked in Houston County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 36321 | Cowarts | 95 | A | 1 | $179K |
| 2 | 36375 | Slocomb | 95 | A | 1 | $124K |
| 3 | 36304 | Dothan | 94 | A | 5 | — |
| 4 | 36376 | Webb | 94 | A | 2 | $104K |
| 5 | 36320 | Cottonwood | 91 | A | 5 (1 health) | $131K |
| 6 | 36302 | Dothan | 90 | A | 5 | — |
| 7 | 36305 | Dothan | 90 | A | 5 | $236K |
| 8 | 36312 | Ashford | 89 | A | 3 | $158K |
| 9 | 36301 | Dothan | 80 | B | 5 | $156K |
| 10 | 36303 | Dothan | 80 | B | 5 | $176K |
| 11 | 36343 | Gordon | 73 | B | 1 | $95K |
| 12 | 36370 | Pansey | 73 | B | 0 | $101K |
Recommended Buyer Guides for Houston County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Deep Dive Reports
Detailed analysis for Houston County, Alabama
Overview
Houston County in Alabama covers 12 ZIP codes with an average Home Safety Score of A (87/100).
11 of 12 ZIP codes have recorded EPA violations. 1 health-based violation 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.