Kandiyohi County, Minnesota
10 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-04
Monitoring figures for Kandiyohi County indicate average water quality overall — some ZIP codes among the 10 tracked have recorded health-based violations, while others operate cleanly, making individual ZIP-level data the most actionable reference point.
How Kandiyohi County Compares
How Kandiyohi County Compares
Kandiyohi County scores 1 points below the Minnesota state average (62/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Kandiyohi County, Minnesota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.4 (asthma 10.1%, diabetes 12.3%)
Estimated additional annual cost per homeowner: $1,126, driven primarily by energy_code_gap
Infrastructure: 0.403% avg pipe failure probability, 30% of ZIPs at high risk
70.6% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Kandiyohi County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 4 violations. Past 5 years: 12 total (12 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
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: $1,126
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
19,483 housing units in Kandiyohi 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 Kandiyohi County
Remediation costs are relatively manageable for most homeowners in Kandiyohi 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 Kandiyohi 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 Kandiyohi County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Lake Lillian | 236 | 19 |
| 2 | Blomkest | 161 | 16 |
| 3 | Roseland Coop Well | 70 | 16 |
| 4 | North Roseland Water Association | 60 | 16 |
| 5 | New London | 1,277 | 1 |
15 total water systems serve Kandiyohi County.
All ZIP Codes in Kandiyohi County
10 ZIP codes tracked in Kandiyohi County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 56201 | Willmar | 70 | B | 0 | $199K |
| 2 | 56251 | Kandiyohi | 70 | B | 0 | $203K |
| 3 | 56282 | Raymond | 70 | B | 1 | $187K |
| 4 | 56209 | Atwater | 66 | C | 0 | $220K |
| 5 | 56279 | Pennock | 66 | C | 0 | $228K |
| 6 | 56288 | Spicer | 62 | C | 0 | $380K |
| 7 | 56273 | New London | 55 | C | 1 | $299K |
| 8 | 56281 | Prinsburg | 55 | C | 0 | $190K |
| 9 | 56216 | Blomkest | 51 | D | 16 | $142K |
| 10 | 56253 | Lake Lillian | 45 | D | 19 (13 health) | $196K |
Recommended Buyer Guides for Kandiyohi 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 — 70.6% of homes built before 1978
- 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
Deep Dive Reports
Detailed analysis for Kandiyohi County, Minnesota
Overview
Kandiyohi County in Minnesota covers 10 ZIP codes with an average Home Safety Score of C (61/100).
4 of 10 ZIP codes have recorded EPA violations. 13 health-based violations have been documented.
← Back to Minnesota 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.