Grosse Ile, MI: Lead Above EPA Limits — 60/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
For most households in Grosse Ile, MI tap water is adequate — the middle-tier grade reflects gaps in specific service areas.
How Grosse Ile Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Grosse Ile Residents
- Your city's water systems recorded 1 violation in the past 5 years.
- Average lead level: 0.0192 mg/L — exceeds the EPA action level of 0.015 mg/L.
- Homes built before 1986: 68% — older plumbing may contain lead solder.
- Estimated remediation: $5,280 per household.
- CDC health risk index: 14.63 — above typical levels.
Grosse Ile's Water Providers
Multiple utilities divide Grosse Ile, MI's water service — 3 leading providers among 3 on the federal register.
Overview
We track water quality and home safety data for 1 ZIP code in Grosse Ile, Michigan (population ~10,603), covering 3 community water systems serving approximately 54,798 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Grosse Ile: C (60/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Grosse Ile water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0192 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 ZIP code exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 48138 | C | 1 | 0 | Grosse Ile Township |
All ZIP Codes in Grosse Ile
- 48138 [C] — 1 violation
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Grosse Ile Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Grosse Ile's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Grosse Ile Infrastructure Age
With 68% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Housing age is one of the most reliable proxies for plumbing-era lead risk, because two federal milestones — the widespread use of lead pipes before 1970 and the continued use of lead solder until 1986 — define the highest-risk tiers of the residential housing stock. With a median build year of 1976, Grosse Ile falls squarely within the older range — meaning a large fraction of the housing was built under the plumbing standards of those earlier eras. The distribution above captures where that risk concentrates, and why older neighborhoods warrant particular attention from residents concerned about tap water quality.
Over half of homes in Grosse Ile were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Grosse Ile
The equity-to-remediation ratio in Grosse Ile is moderate — worth planning for but within reach for most property owners.
Remediation costs are moderate relative to home values in Grosse Ile. The estimated $3,520–$7,240 range is manageable for most homeowners but still worth budgeting for. Home values are 68% above the Michigan average.
Grosse Ile: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Wherever 68% of housing comes from before the federal solder ban and citywide samples cross the regulatory action mark — as in Grosse Ile — household kits and a certified filter via retailer networks are the household-level tools.
<strong>1 ZIP code</strong> (100% of the city) exceeds the EPA lead action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Grosse Ile: Flood History & Water Damage Risk
The NFIP claim record for Grosse Ile — 58 filed incidents — reflects genuine, recurring flood exposure rather than an isolated event or two. When a community accumulates flood claims at this volume and carries 100% of its ZIP codes inside FEMA-designated zones, flood history starts to factor into water quality planning in ways it doesn't for lower-exposure areas. Flooding introduces specific contamination pathways — runoff overwhelming treatment facility intake, surface water infiltrating private wells, and pressure disruptions in distribution systems allowing backflow — all of which become more relevant as flood frequency increases.
Grosse Ile has a moderate flood history with 58 FEMA claims averaging $5,958 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$5,280</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Grosse Ile
- Test your water at home. City-level data shows averages — your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Haloacetic Acids (HAA5) can reduce the most common contaminant found in Grosse Ile's water.
- Check your home's plumbing. With 68% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Grosse Ile, MI