Potter County, South Dakota
5 ZIP codes · Avg score 55/100 · Grade C · Updated 2026-06-04
Water systems across Potter County's 5 ZIP codes produce average compliance results overall — pockets with documented violations exist, and the variation between areas makes ZIP-level lookup the most useful tool for residents here.
How Potter County Compares
How Potter County Compares
Potter County scores 5 points below the South Dakota state average (60/100) and 13 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Potter County, South Dakota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.2 (asthma 9.8%, diabetes 13.4%)
Estimated additional annual cost per homeowner: $498, driven primarily by water_lead
Infrastructure: 0.42% avg pipe failure probability, 80% of ZIPs at high risk
79.2% 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: $498
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,827 housing units in Potter 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 Potter County
Remediation costs are relatively manageable for most homeowners in Potter 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 Potter 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 Potter County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Web Water Development Association | 20,750 | 9 |
| 2 | TOLSTOY | 36 | 9 |
| 3 | Mid-dakota Rural Water | 11,833 | 0 |
| 4 | Gettysburg | 1,162 | 0 |
| 5 | Hoven | 346 | 0 |
All ZIP Codes in Potter County
5 ZIP codes tracked in Potter County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57442 | Gettysburg | 66 | C | 0 | $133K |
| 2 | 57450 | Hoven | 66 | C | 0 | $127K |
| 3 | 57475 | Tolstoy | 62 | C | 9 | $108K |
| 4 | 57455 | Lebanon | 40 | D | 0 | $73K |
| 5 | 57466 | Onaka | 40 | D | 0 | $39K |
Recommended Buyer Guides for Potter County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 79.2% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Potter County, South Dakota
Overview
Potter County in South Dakota covers 5 ZIP codes with an average Home Safety Score of C (55/100).
1 of 5 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.