Delta County, Michigan
12 ZIP codes · Avg score 80/100 · Grade B · Updated 2026-06-03
Homeowners across Delta County's 12 ZIP codes live with water safety scores that generally beat state and national averages.
How Delta County Compares
How Delta County Compares
Delta County scores 6 points above the Michigan state average (74/100) and 12 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Delta County, Michigan
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.4 (asthma 11.6%, diabetes 13.5%)
Estimated additional annual cost per homeowner: $928, driven primarily by energy_code_gap
Infrastructure: 0.409% avg pipe failure probability, 30% of ZIPs at high risk
73.1% of homes built before 1978 (lead paint era)
Violation History (2021–2022)
→ Stable trendEPA violation counts by year across Delta County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 10 violations. Past 5 years: 20 total (20 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: $928
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
19,825 housing units in Delta 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 Delta County
Remediation costs are relatively manageable for most homeowners in Delta 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 Delta 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 Delta County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | NAHMA TOWNSHIP | 95 | 12 |
| 2 | Ford River Township | 385 | 5 |
| 3 | Cedar Hill Assisted Living | 45 | 5 |
| 4 | MAPLE RIDGE TOWNSHIP | 250 | 2 |
| 5 | GLADSTONE | 4,632 | 1 |
7 total water systems serve Delta County.
All ZIP Codes in Delta County
12 ZIP codes tracked in Delta County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 49880 | Rock | 98 | A | 2 | $130K |
| 2 | 49829 | Escanaba | 95 | A | 0 | $139K |
| 3 | 49837 | Gladstone | 95 | A | 1 | $145K |
| 4 | 49878 | Rapid River | 95 | A | 1 | $165K |
| 5 | 49807 | Bark River | 93 | A | 5 | $171K |
| 6 | 49864 | Nahma | 80 | B | 12 (7 health) | $175K |
| 7 | 49818 | Cornell | 73 | B | 0 | $161K |
| 8 | 49817 | Cooks | 66 | C | 0 | $181K |
| 9 | 49819 | Arnold | 66 | C | 0 | — |
| 10 | 49845 | Harris | 66 | C | 0 | — |
| 11 | 49872 | Perkins | 66 | C | 0 | $164K |
| 12 | 49894 | Wells | 66 | C | 0 | $142K |
Recommended Buyer Guides for Delta 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 Lead Paint Test Kits — 73.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Delta County, Michigan
Overview
Delta County in Michigan covers 12 ZIP codes with an average Home Safety Score of B (80/100).
5 of 12 ZIP codes have recorded EPA violations. 7 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.