Martin County, Minnesota
8 ZIP codes · Avg score 62/100 · Grade C · Updated 2026-06-03
For most households in Martin County, the 8 tracked ZIP codes show adequate but uneven water quality.
How Martin County Compares
How Martin County Compares
Martin County scores 0 points above the Minnesota state average (62/100) and 6 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Martin County, Minnesota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.9 (asthma 9.9%, diabetes 13%)
Estimated additional annual cost per homeowner: $1,045, driven primarily by energy_code_gap
Infrastructure: 0.465% avg pipe failure probability, 88% of ZIPs at high risk
84.5% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↓ Improving trendEPA violation counts by year across Martin County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 4 violations. Past 5 years: 7 total (7 health-based). Health-based violations are declining versus the prior 2-year window.
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: $1,045
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
9,328 housing units in Martin 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 Martin County
Remediation costs are relatively manageable for most homeowners in Martin 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 Martin 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 Martin County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Granada | 297 | 2 |
| 2 | Huntley Well Corporation | 78 | 2 |
| 3 | Fairmont | 10,328 | 1 |
| 4 | Dunnell | 167 | 1 |
| 5 | Northrop | 211 | 0 |
10 total water systems serve Martin County.
All ZIP Codes in Martin County
8 ZIP codes tracked in Martin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 56031 | Fairmont | 66 | C | 1 | $176K |
| 2 | 56171 | Sherburn | 66 | C | 0 | $155K |
| 3 | 56181 | Welcome | 66 | C | 0 | $100K |
| 4 | 56176 | Trimont | 63 | C | 0 | $118K |
| 5 | 56039 | Granada | 61 | C | 2 (1 health) | $152K |
| 6 | 56075 | Northrop | 59 | C | 0 | $104K |
| 7 | 56127 | Dunnell | 59 | C | 1 | $106K |
| 8 | 56088 | Truman | 55 | C | 0 | $134K |
Recommended Buyer Guides for Martin County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Lead Paint Test Kits — 84.5% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Martin County, Minnesota
Overview
Martin County in Minnesota covers 8 ZIP codes with an average Home Safety Score of C (62/100).
3 of 8 ZIP codes have recorded EPA violations. 1 health-based violation 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.