Miner County, South Dakota
4 ZIP codes · Avg score 54/100 · Grade D · Updated 2026-06-04
Of 4 ZIP codes in Miner County, a meaningful portion have recorded health-based violations in recent monitoring periods — placing the county in the lower tier for water safety.
How Miner County Compares
How Miner County Compares
Miner County scores 6 points below the South Dakota state average (60/100) and 14 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 14 (asthma 9.8%, diabetes 13%)
Estimated additional annual cost per homeowner: $720, driven primarily by water_lead
Infrastructure: 0.445% avg pipe failure probability, 100% of ZIPs at high risk
78.3% 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: $720
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,208 housing units in Miner 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 Miner County
Remediation costs are relatively manageable for most homeowners in Miner 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 Miner 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 Miner County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Kingbrook Ii Rural Water System | 2,715 | 6 |
| 2 | Kingbrook Iii Rural Water System | 2,888 | 3 |
| 3 | HOWARD | 848 | 3 |
| 4 | Hanson Rural Water System | 2,685 | 3 |
| 5 | Canova | 89 | 3 |
6 total water systems serve Miner County.
All ZIP Codes in Miner County
4 ZIP codes tracked in Miner County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57321 | Canova | 62 | C | 3 (1 health) | $252K |
| 2 | 57349 | Howard | 62 | C | 3 | $116K |
| 3 | 57076 | Winfred | 53 | D | 0 | $264K |
| 4 | 57323 | Carthage | 40 | D | 0 | $75K |
Recommended Buyer Guides for Miner County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Lead Paint Test Kits — 78.3% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Overview
Miner County in South Dakota covers 4 ZIP codes with an average Home Safety Score of D (54/100).
2 of 4 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.
What You Can Do
Miner County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
78.3% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.