Kingsbury County, South Dakota
4 ZIP codes · Avg score 62/100 · Grade C · Updated 2026-06-04
Recent monitoring in Kingsbury County's 4 ZIP codes shows middle-tier safety — some systems are clean; others have logged EPA violations.
How Kingsbury County Compares
How Kingsbury County Compares
Kingsbury County scores 2 points above the South Dakota state average (60/100) and 6 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 13.6 (asthma 9.9%, diabetes 12.1%)
Estimated additional annual cost per homeowner: $850, driven primarily by flood
Infrastructure: 0.42% avg pipe failure probability, 50% of ZIPs at high risk
74.3% 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: $850
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,702 housing units in Kingsbury 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 Kingsbury County
Remediation costs are relatively manageable for most homeowners in Kingsbury 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 Kingsbury 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 Kingsbury County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Kingbrook I Rural Water System | 6,455 | 0 |
| 2 | Kingbrook Ii Rural Water System | 2,715 | 0 |
| 3 | LAKE PRESTON | 589 | 0 |
| 4 | Badger | 105 | 0 |
| 5 | Mid-dakota Rural Water | 11,833 | 0 |
6 total water systems serve Kingsbury County.
All ZIP Codes in Kingsbury County
4 ZIP codes tracked in Kingsbury County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57231 | De Smet | 70 | B | 0 | $174K |
| 2 | 57214 | Badger | 66 | C | 0 | $76K |
| 3 | 57249 | Lake Preston | 60 | C | 0 | $203K |
| 4 | 57051 | Oldham | 53 | D | 0 | $100K |
Recommended Buyer Guides for Kingsbury County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 74.3% 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
Kingsbury County in South Dakota covers 4 ZIP codes with an average Home Safety Score of C (62/100).
No EPA violations recorded across any tracked ZIP codes in Kingsbury County.
← 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.