Sebastian County, Arkansas
20 ZIP codes · Avg score 89/100 · Grade A · Updated 2026-06-04
Across all 20 ZIP codes in Sebastian County, tap water consistently meets or exceeds federal safety standards.
How Sebastian County Compares
How Sebastian County Compares
Sebastian County scores 13 points above the Arkansas state average (76/100) and 21 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Sebastian County, Arkansas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.2 (asthma 10.3%, diabetes 13.1%)
Estimated additional annual cost per homeowner: $1,026, driven primarily by flood
Infrastructure: 0.35% avg pipe failure probability, 33% of ZIPs at high risk
54.8% of homes built before 1978 (lead paint era)
Violation History (2021–2023)
→ Stable trendEPA violation counts by year across Sebastian County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 15 violations. Past 5 years: 34 total (34 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: $1,026
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
55,481 housing units in Sebastian 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 Sebastian County
Remediation costs are relatively manageable for most homeowners in Sebastian 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 Sebastian 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 Sebastian County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | James Fork Regional Water District | 11,538 | 19 |
| 2 | Hartford Waterworks | 725 | 19 |
| 3 | Fort Smith Water Utilities | 86,209 | 17 |
| 4 | Hackett Waterworks | 1,090 | 17 |
| 5 | Greenwood Waterworks | 9,905 | 13 |
14 total water systems serve Sebastian County.
All ZIP Codes in Sebastian County
20 ZIP codes tracked in Sebastian County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 72905 | Fort Smith | 99 | A | 0 | — |
| 2 | 72913 | Fort Smith | 99 | A | 0 | — |
| 3 | 72914 | Fort Smith | 99 | A | 0 | — |
| 4 | 72916 | Fort Smith | 99 | A | 0 | $257K |
| 5 | 72917 | Fort Smith | 99 | A | 0 | — |
| 6 | 72918 | Fort Smith | 99 | A | 0 | — |
| 7 | 72919 | Fort Smith | 99 | A | 0 | — |
| 8 | 72902 | Fort Smith | 95 | A | 0 | — |
| 9 | 72906 | Fort Smith | 95 | A | 0 | — |
| 10 | 72923 | Barling | 95 | A | 0 | $126K |
| 11 | 72904 | Fort Smith | 90 | A | 0 | $108K |
| 12 | 72908 | Fort Smith | 90 | A | 0 | $182K |
| 13 | 72941 | Lavaca | 90 | A | 0 | $160K |
| 14 | 72938 | Hartford | 88 | A | 1 | $134K |
| 15 | 72940 | Huntington | 87 | A | 1 (1 health) | $159K |
| 16 | 72901 | Fort Smith | 85 | A | 0 | $113K |
| 17 | 72903 | Fort Smith | 85 | A | 0 | $216K |
| 18 | 72936 | Greenwood | 71 | B | 12 (7 health) | $198K |
| 19 | 72945 | Midland | 66 | C | 0 | $103K |
| 20 | 72937 | Hackett | 49 | D | 5 (5 health) | $142K |
Recommended Buyer Guides for Sebastian 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 — 54.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Sebastian County, Arkansas
Overview
Sebastian County in Arkansas covers 20 ZIP codes with an average Home Safety Score of A (89/100).
4 of 20 ZIP codes have recorded EPA violations. 13 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.