Calhoun County, Arkansas
4 ZIP codes · Avg score 82/100 · Grade B · Updated 2026-06-03
Calhoun County maintains reliable drinking water quality across all 4 of its tracked ZIP codes.
How Calhoun County Compares
How Calhoun County Compares
Calhoun County scores 6 points above the Arkansas state average (76/100) and 14 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 15.7 (asthma 10.4%, diabetes 15.4%)
Estimated additional annual cost per homeowner: $570, driven primarily by energy_code_gap
Infrastructure: 0.347% avg pipe failure probability
65% 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: $570
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,437 housing units in Calhoun 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 Calhoun County
Remediation costs are relatively manageable for most homeowners in Calhoun 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 Calhoun 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 Calhoun County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Calhoun County Water Assn | 1,591 | 3 |
| 2 | Thornton Waterworks | 900 | 3 |
| 3 | Locust Bayou Water Association | 531 | 3 |
| 4 | Hampton Waterworks | 1,906 | 2 |
| 5 | Warren Waterworks | 6,001 | 0 |
8 total water systems serve Calhoun County.
All ZIP Codes in Calhoun County
4 ZIP codes tracked in Calhoun County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 71745 | Harrell | 88 | A | 0 | $153K |
| 2 | 71766 | Thornton | 88 | A | 1 | $59K |
| 3 | 71744 | Hampton | 85 | A | 2 | $104K |
| 4 | 71631 | Banks | 66 | C | 0 | $54K |
Recommended Buyer Guides for Calhoun County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 65% of homes built before 1978
Overview
Calhoun County in Arkansas covers 4 ZIP codes with an average Home Safety Score of B (82/100).
2 of 4 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Arkansas 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.