Bennett County, South Dakota
1 ZIP code · Avg score 80/100 · Grade B · Updated 2026-06-03
Tracking 1 ZIP code in Bennett County shows a water safety record well above the national median — violations are isolated exceptions, not recurring patterns.
How Bennett County Compares
How Bennett County Compares
Bennett County scores 20 points above the South Dakota state average (60/100) and 12 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 17.4 (asthma 13.2%, diabetes 18.7%)
Estimated additional annual cost per homeowner: $970, driven primarily by water_lead
Infrastructure: 0.45% avg pipe failure probability, 100% of ZIPs at high risk
82% 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: $970
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
932 housing units in Bennett 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 Bennett County
Remediation costs are relatively manageable for most homeowners in Bennett 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 Bennett County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
All ZIP Codes in Bennett County
1 ZIP code tracked in Bennett County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57551 | Martin | 80 | B | 3 | $138K |
Recommended Buyer Guides for Bennett County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- Best Lead Paint Test Kits — 82% of homes built before 1978
Overview
Bennett County in South Dakota covers 1 ZIP code with an average Home Safety Score of B (80/100).
1 of 1 ZIP code 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.