Lenawee County, Michigan
19 ZIP codes · Avg score 65/100 · Grade C · Updated
ZipCheckup grade for Lenawee County: C.
A mixed picture - some signals here are worth your attention.
Current EPA records place Lenawee County in the middle tier for drinking water safety, with 19 ZIP codes showing a range of outcomes.
How Lenawee County Compares
How Lenawee County Compares
Lenawee County scores 20 points below the Michigan state average (85/100) and 8 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Lenawee County, Michigan
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.4 (asthma 11.3%, diabetes 12.4%)
Estimated additional annual cost per homeowner: $1,591, driven primarily by energy_code_gap
73.8% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Lenawee County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 9 violations. Past 5 years: 21 total (21 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
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,591
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
44,663 housing units in Lenawee 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 Lenawee County
Remediation costs are relatively manageable for most homeowners in Lenawee 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 Lenawee County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Lenawee County
8 community water systems serving Lenawee County.
- C
- C
- C
- C
- C
14 total water systems serve Lenawee County.
Systems with the most violations in Lenawee County
5 water systems with recorded EPA violations.
- C
All ZIP Codes in Lenawee County
19 ZIP codes tracked in Lenawee County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 49221 | Adrian | 66 | C | 1 | $159K |
| 2 | 49228 | Blissfield | 66 | C | 1 | $178K |
| 3 | 49286 | Tecumseh | 63 | C | 9 (1 health) | $222K |
| 4 | 49220 | Addison | — | — | 28 (12 health) | $205K |
| 5 | 49229 | Britton | — | — | 3 | $217K |
| 6 | 49233 | Cement City | — | — | 16 (8 health) | $219K |
| 7 | 49235 | Clayton | — | — | 0 | $172K |
| 8 | 49236 | Clinton | — | — | 7 (1 health) | $200K |
| 9 | 49238 | Deerfield | — | — | $193K | |
| 10 | 49247 | Hudson | — | — | 13 (4 health) | $139K |
| 11 | 49248 | Jasper | — | — | $144K | |
| 12 | 49253 | Manitou Beach | — | — | 27 (12 health) | $226K |
| 13 | 49256 | Morenci | — | — | 1 | $113K |
| 14 | 49265 | Onsted | — | — | 10 | $245K |
| 15 | 49268 | Palmyra | — | — | $166K | |
| 16 | 49276 | Riga | — | — | $202K | |
| 17 | 49279 | Sand Creek | — | — | 1 | $168K |
| 18 | 49287 | Tipton | — | — | $236K | |
| 19 | 49289 | Weston | — | — | $108K |
Recommended Buyer Guides for Lenawee County
Eight risk categories drive the selection - PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback - and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 73.8% 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 Lenawee County, Michigan
Overview
Lenawee County in Michigan covers 19 tracked ZIP records with an average Home Safety Score of C (65/100) across 3 scored records.
12 of 13 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 13 health-based violations appear in the available health breakdown.
← Back to Michigan Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.