Mason County, Michigan
6 ZIP codes · Avg score 77/100 · Grade B · Updated 2026-06-03
Compared to state averages, Mason County scores well — its 6 ZIP codes sit above the baseline for tap water quality.
How Mason County Compares
How Mason County Compares
Mason County scores 3 points above the Michigan state average (74/100) and 9 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Mason County, Michigan
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.5 (asthma 11.4%, diabetes 13.8%)
Estimated additional annual cost per homeowner: $740, driven primarily by energy_code_gap
Infrastructure: 0.368% avg pipe failure probability, 17% of ZIPs at high risk
60% 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: $740
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
15,535 housing units in Mason 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 Mason County
Remediation costs are relatively manageable for most homeowners in Mason 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 Mason 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 Mason County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | SCOTTVILLE, CITY OF | 1,536 | 3 |
| 2 | Pere Marquette Twp - Customer | 339 | 3 |
| 3 | Holiday Village Mobile Home Park | 185 | 2 |
| 4 | Ludington | 8,184 | 1 |
| 5 | Tall Oaks Condominums | 65 | 1 |
6 total water systems serve Mason County.
All ZIP Codes in Mason County
6 ZIP codes tracked in Mason County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 49454 | Scottville | 98 | A | 2 | $174K |
| 2 | 49431 | Ludington | 95 | A | 1 | $219K |
| 3 | 49411 | Free Soil | 73 | B | 0 | $221K |
| 4 | 49405 | Custer | 66 | C | 0 | $143K |
| 5 | 49410 | Fountain | 66 | C | 0 | $162K |
| 6 | 49458 | Walhalla | 66 | C | 0 | $56K |
Recommended Buyer Guides for Mason 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 — 60% of homes built before 1978
Deep Dive Reports
Detailed analysis for Mason County, Michigan
Overview
Mason County in Michigan covers 6 ZIP codes with an average Home Safety Score of B (77/100).
2 of 6 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Michigan 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.