Limestone County, Alabama
9 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-03
Limestone County's water quality grade reflects a middle-ground assessment — its 9 ZIP codes range from fully compliant to violation-flagged.
How Limestone County Compares
How Limestone County Compares
Limestone County scores 13 points below the Alabama state average (73/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Limestone County, Alabama
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.7 (asthma 9.7%, diabetes 12.5%)
Estimated additional annual cost per homeowner: $420, driven primarily by flood
Infrastructure: 0.261% avg pipe failure probability
36.5% 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: $420
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
42,251 housing units in Limestone 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 Limestone County
Remediation costs are relatively manageable for most homeowners in Limestone 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 Limestone 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 Limestone County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Limestone County Water and Sewer Authority | 65,003 | 35 |
| 2 | City of Athens, the Waterworks Bd of the | 40,596 | 28 |
| 3 | Ardmore Water System | 3,903 | 11 |
| 4 | Swan Creek Community, Royce Swan, Llc | 324 | 9 |
| 5 | Rogersville Water Works & Sewer Board | 5,271 | 8 |
11 total water systems serve Limestone County.
All ZIP Codes in Limestone County
9 ZIP codes tracked in Limestone County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 35614 | Athens | 68 | C | 4 | $178K |
| 2 | 35739 | Ardmore | 67 | C | 7 | $200K |
| 3 | 35756 | Madison | 65 | C | 7 | $351K |
| 4 | 35612 | Athens | 64 | C | 4 | — |
| 5 | 35611 | Athens | 63 | C | 4 | $202K |
| 6 | 35613 | Athens | 63 | C | 4 | $291K |
| 7 | 35671 | Tanner | 60 | C | 5 | $251K |
| 8 | 35620 | Elkmont | 53 | D | 0 | $191K |
| 9 | 35647 | Lester | 40 | D | 0 | $241K |
Recommended Buyer Guides for Limestone 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 Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in 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 Limestone County, Alabama
Overview
Limestone County in Alabama covers 9 ZIP codes with an average Home Safety Score of C (60/100).
7 of 9 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← 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.