Hanson County, South Dakota
3 ZIP codes · Avg score 58/100 · Grade C · Updated 2026-06-04
Safe water is the norm for most of Hanson County's 3 ZIP codes — but a notable subset have documented violations that push the grade to the middle tier.
How Hanson County Compares
How Hanson County Compares
Hanson County scores 2 points below the South Dakota state average (60/100) and 10 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 13.4 (asthma 10.4%, diabetes 12.1%)
Estimated additional annual cost per homeowner: $787, driven primarily by water_lead
Infrastructure: 0.443% avg pipe failure probability, 67% of ZIPs at high risk
80.3% 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: $787
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
988 housing units in Hanson 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 Hanson County
Remediation costs are relatively manageable for most homeowners in Hanson 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 Hanson County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Hanson County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Hanson Rural Water System | 2,685 | 1 |
| 2 | Alexandria | 649 | 1 |
| 3 | Tm Rural Water District | 4,250 | 0 |
| 4 | Emery | 480 | 0 |
All ZIP Codes in Hanson County
3 ZIP codes tracked in Hanson County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57311 | Alexandria | 69 | C | 1 (1 health) | $192K |
| 2 | 57332 | Emery | 66 | C | 0 | $148K |
| 3 | 57340 | Fulton | 40 | D | 0 | $225K |
Recommended Buyer Guides for Hanson 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 — 80.3% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Overview
Hanson County in South Dakota covers 3 ZIP codes with an average Home Safety Score of C (58/100).
1 of 3 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← 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.