Dunklin County, Missouri
10 ZIP codes · Avg score 86/100 · Grade A · Updated 2026-07-19
ZipCheckup grade for Dunklin: A.
No federal data flags a major home-safety concern for this ZIP.
In recent assessments, Dunklin County's 10 ZIP codes record strong, consistent water safety outcomes.
How Dunklin County Compares
How Dunklin County Compares
Dunklin County scores 17 points above the Missouri state average (69/100) and 18 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Dunklin County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 17.2 (asthma 11.4%, diabetes 16%)
Estimated additional annual cost per homeowner: $811, driven primarily by flood
Infrastructure: 0.458% avg pipe failure probability, 90% of ZIPs at high risk
77.3% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across Dunklin County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 7 violations. Past 5 years: 16 total (16 health-based). Health-based violations are declining versus the prior 2-year window.
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: $811
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,845 housing units in Dunklin 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 Dunklin County
Water safety remediation is a moderate expense relative to home values. Most homeowners can address issues through staged improvements over time.
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 Dunklin County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Dunklin County
8 community water systems serving Dunklin County.
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Show all 8 water systems
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13 total water systems serve Dunklin County.
Systems with the most violations in Dunklin County
5 water systems with recorded EPA violations.
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All ZIP Codes in Dunklin County
10 ZIP codes tracked in Dunklin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 63821 | Arbyrd | 95 | A | 1 | $63K |
| 2 | 63837 | Clarkton | 93 | A | 10 (2 health) | $55K |
| 3 | 63855 | Hornersville | 93 | A | 5 | $66K |
| 4 | 63876 | Senath | 93 | A | 10 (2 health) | $98K |
| 5 | 63933 | Campbell | 91 | A | 5 (1 health) | $81K |
| 6 | 63863 | Malden | 89 | A | 2 (1 health) | $89K |
| 7 | 63829 | Cardwell | 88 | A | 8 | $58K |
| 8 | 63857 | Kennett | 85 | A | 4 | $110K |
| 9 | 63847 | Gibson | 66 | C | 0 | — |
| 10 | 63875 | Rives | 66 | C | 0 | — |
Recommended Buyer Guides for Dunklin 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 — 77.3% 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 Dunklin County, Missouri
Overview
Dunklin County in Missouri covers 10 ZIP codes with an average Home Safety Score of A (86/100).
8 of 10 ZIP codes have recorded EPA violations. 6 health-based violations have been documented.
← Back to Missouri 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.