Davison County, South Dakota
2 ZIP codes · Avg score 67/100 · Grade C · Updated 2026-06-04
Davison County shows moderate water quality across its 2 ZIP codes — some areas carry violations worth monitoring.
How Davison County Compares
How Davison County Compares
Davison County scores 7 points above the South Dakota state average (60/100) and 1 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 13.8 (asthma 10%, diabetes 12.2%)
Estimated additional annual cost per homeowner: $1,345, driven primarily by flood
Infrastructure: 0.42% avg pipe failure probability, 50% of ZIPs at high risk
76% 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: $1,345
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
9,432 housing units in Davison 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 Davison County
Remediation costs are relatively manageable for most homeowners in Davison 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 Davison 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 Davison County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Mitchell | 15,651 | 1 |
| 2 | Davison Rural Water System Inc. | 3,485 | 1 |
| 3 | Hanson Rural Water System | 2,685 | 1 |
| 4 | Mid-dakota Rural Water | 11,833 | 0 |
| 5 | Mount Vernon | 461 | 0 |
All ZIP Codes in Davison County
2 ZIP codes tracked in Davison County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57363 | Mount Vernon | 68 | C | 0 | $207K |
| 2 | 57301 | Mitchell | 65 | C | 1 | $191K |
Recommended Buyer Guides for Davison County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Lead Paint Test Kits — 76% of homes built before 1978
- 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
Overview
Davison County in South Dakota covers 2 ZIP codes with an average Home Safety Score of C (67/100).
1 of 2 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to South Dakota 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.