Columbia County, Arkansas
6 ZIP codes · Avg score 83/100 · Grade B · Updated 2026-06-03
Covering 6 ZIP codes, Columbia County earns a high grade for tap water — most systems report zero health-based violations, and the overall compliance rate comfortably exceeds federal benchmarks.
How Columbia County Compares
How Columbia County Compares
Columbia County scores 7 points above the Arkansas state average (76/100) and 15 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Columbia County, Arkansas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.7 (asthma 11%, diabetes 14.4%)
Estimated additional annual cost per homeowner: $428, driven primarily by energy_code_gap
Infrastructure: 0.372% avg pipe failure probability, 33% of ZIPs at high risk
58% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Columbia County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 21 violations. Past 5 years: 57 total (57 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: $428
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
11,978 housing units in Columbia 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 Columbia County
Remediation costs are relatively manageable for most homeowners in Columbia 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 Columbia 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 Columbia County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Dorcheat Water Association | 1,860 | 51 |
| 2 | Magnolia Waterworks | 11,657 | 34 |
| 3 | Lakeside Water Association | 1,876 | 34 |
| 4 | Walker Water Association | 1,182 | 20 |
| 5 | Emerson Waterworks | 1,145 | 17 |
14 total water systems serve Columbia County.
All ZIP Codes in Columbia County
6 ZIP codes tracked in Columbia County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 71753 | Magnolia | 94 | A | 3 | $167K |
| 2 | 71754 | Magnolia | 94 | A | 3 | — |
| 3 | 71752 | Mc Neil | 88 | A | 0 | $58K |
| 4 | 71740 | Emerson | 87 | A | 14 (1 health) | $142K |
| 5 | 71861 | Taylor | 78 | B | 17 (8 health) | $115K |
| 6 | 71770 | Waldo | 55 | C | 14 (14 health) | $92K |
Recommended Buyer Guides for Columbia County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Lead Paint Test Kits — 58% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Columbia County, Arkansas
Overview
Columbia County in Arkansas covers 6 ZIP codes with an average Home Safety Score of B (83/100).
5 of 6 ZIP codes have recorded EPA violations. 23 health-based violations have been documented.
← 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.