Minnehaha County, South Dakota
31 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-04
Minnehaha County's water quality grade reflects a middle-ground assessment — its 31 ZIP codes range from fully compliant to violation-flagged.
How Minnehaha County Compares
How Minnehaha County Compares
Minnehaha County scores 1 points above the South Dakota state average (60/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Minnehaha 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: 12.2 (asthma 9.7%, diabetes 10.6%)
Estimated additional annual cost per homeowner: $544, driven primarily by flood
Infrastructure: 0.315% avg pipe failure probability, 6% of ZIPs at high risk
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Minnehaha County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 19 violations. Past 5 years: 37 total (37 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $544
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Minnehaha County
Remediation costs are relatively manageable for most homeowners in Minnehaha 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 Minnehaha 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 Minnehaha County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | SIOUX FALLS | 216,462 | 38 |
| 2 | Pine Lake Hills | 320 | 38 |
| 3 | Lincoln County Rural Water System | 5,965 | 36 |
| 4 | Valley View Estates | 230 | 36 |
| 5 | Skyline Heights | 110 | 36 |
20 total water systems serve Minnehaha County.
All ZIP Codes in Minnehaha County
31 ZIP codes tracked in Minnehaha County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57018 | Colton | 70 | B | 0 | $241K |
| 2 | 57033 | Hartford | 70 | B | 0 | $281K |
| 3 | 57068 | Valley Springs | 70 | B | 0 | $252K |
| 4 | 57003 | Baltic | 68 | C | 1 | $262K |
| 5 | 57020 | Crooks | 66 | C | 0 | $286K |
| 6 | 57030 | Garretson | 66 | C | 0 | $279K |
| 7 | 57035 | Humboldt | 66 | C | 0 | $305K |
| 8 | 57101 | Sioux Falls | 66 | C | 2 (1 health) | — |
| 9 | 57110 | Sioux Falls | 66 | C | 2 (1 health) | $366K |
| 10 | 57056 | Brandon | 65 | C | 2 | — |
| 11 | 57005 | Brandon | 64 | C | 2 | $323K |
| 12 | 57106 | Sioux Falls | 61 | C | 2 (1 health) | $269K |
| 13 | 57107 | Sioux Falls | 61 | C | 2 (1 health) | $251K |
| 14 | 57109 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 15 | 57117 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 16 | 57118 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 17 | 57186 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 18 | 57189 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 19 | 57192 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 20 | 57193 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 21 | 57194 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 22 | 57195 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 23 | 57196 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 24 | 57197 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 25 | 57198 | Sioux Falls | 61 | C | 2 (1 health) | — |
| 26 | 57022 | Dell Rapids | 60 | C | 0 | $294K |
| 27 | 57104 | Sioux Falls | 56 | C | 2 (1 health) | $184K |
| 28 | 57105 | Sioux Falls | 56 | C | 2 (1 health) | $248K |
| 29 | 57016 | Chester | 45 | D | 0 | $226K |
| 30 | 57041 | Lyons | 40 | D | 0 | — |
| 31 | 57055 | Renner | 40 | D | 0 | $420K |
Recommended Buyer Guides for Minnehaha County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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
Deep Dive Reports
Detailed analysis for Minnehaha County, South Dakota
Overview
Minnehaha County in South Dakota covers 31 ZIP codes with an average Home Safety Score of C (61/100).
21 of 31 ZIP codes have recorded EPA violations. 18 health-based violations 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.