Cass County, Michigan
7 ZIP codes · Avg score 57/100 · Grade C · Updated 2026-06-03
Recent monitoring in Cass County's 7 ZIP codes shows middle-tier safety — some systems are clean; others have logged EPA violations.
How Cass County Compares
How Cass County Compares
Cass County scores 17 points below the Michigan state average (74/100) and 11 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Cass County, Michigan
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.7 (asthma 11.7%, diabetes 13.1%)
Estimated additional annual cost per homeowner: $891, driven primarily by energy_code_gap
Infrastructure: 0.411% avg pipe failure probability, 43% of ZIPs at high risk
66.4% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Cass County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 2 violations. Past 5 years: 4 total (4 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: $891
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
21,801 housing units in Cass 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 Cass County
Remediation costs are relatively manageable for most homeowners in Cass 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 Cass 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 Cass County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Cassopolis | 1,815 | 25 |
| 2 | Dowagiac | 6,350 | 25 |
| 3 | Cass County Water System | 1,350 | 19 |
| 4 | White Pines Mobile Home Park | 90 | 19 |
| 5 | Colony Bay Condominiums | 75 | 6 |
12 total water systems serve Cass County.
All ZIP Codes in Cass County
7 ZIP codes tracked in Cass County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 49112 | Edwardsburg | 68 | C | 5 | $232K |
| 2 | 49067 | Marcellus | 66 | C | 1 | $187K |
| 3 | 49061 | Jones | 65 | C | 1 (1 health) | $201K |
| 4 | 49047 | Dowagiac | 64 | C | 19 (1 health) | $182K |
| 5 | 49130 | Union | 53 | D | 0 | $333K |
| 6 | 49031 | Cassopolis | 44 | D | 6 (1 health) | $218K |
| 7 | 49095 | Vandalia | 40 | D | 0 | $251K |
Recommended Buyer Guides for Cass County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 66.4% 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 Cass County, Michigan
Overview
Cass County in Michigan covers 7 ZIP codes with an average Home Safety Score of C (57/100).
5 of 7 ZIP codes have recorded EPA violations. 3 health-based violations have been documented.
← 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.