Grosse Ile, MI: Lead Above EPA Action Level - Home Safety 90/100
1 ZIP code · 3 water systems · Updated
ZipCheckup grade for Grosse Ile: A.
Checked records flag no major concern; missing data is unknown.
In ZipCheckup's scoring, Grosse Ile, MI lands in the A-B grade tier.
How Grosse Ile Compares
Data: EPA SDWIS
Key Facts for Grosse Ile Residents
- Your city's water systems recorded 4 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0192 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Homes built before 1986: 68% - older plumbing may contain lead solder.
- Estimated remediation: $4,080 per household.
- Health risk index (ZipCheckup composite of CDC data): 14.63.
Grosse Ile's Water Providers
When a city is linked to 3 water systems, as Grosse Ile, MI is in federal records, water in one neighborhood may come from a different system than in another. The 3 systems with the largest reported populations are shown below, and their compliance records are kept separately, so a violation logged for one does not describe the others.
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Overview
We track home safety data for 1 ZIP code in Grosse Ile, Michigan (population ~10,603), covering 3 community water systems serving approximately 55,215 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Grosse Ile: A (90/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Grosse Ile water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0192 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
| Lead and Copper Rule Revisions | Treatment Technique | 2 | 1 |
| Consumer Confidence Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 48138 | A | 4 | 0 | Grosse Ile Township |
All ZIP Codes in Grosse Ile
- 48138 [A] - 4 violations
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Grosse Ile Community Health Snapshot
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
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. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Renovation history matters as much as age: in Grosse Ile, with a median build year of 1976, some older homes have been replumbed and some have not.
Over half of homes in Grosse Ile were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. 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
This comparison puts two area-level numbers next to each other for Grosse Ile, the median home value and the estimated cost of remediation, and the second works out to more than 1% but not more than 2% of the first - the moderate tier on this page's three-step scale. Individual properties can differ from that estimate in either direction.
Estimated remediation costs in Grosse Ile can be compared with local home values. The estimated $2,720–$5,440 range is a planning estimate; get a property-specific quote and check it against your budget. Home values are 68% above the Michigan average.
Grosse Ile: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
68% of the Grosse Ile housing stock was built before 1986, when federal law limited lead in pipes, solder and flux. Averaged across the city's ZIP codes, water systems' 90th-percentile lead results come to more than 0.015 mg/L. That figure is not one system's compliance result and not a measurement from any home, but together with the age of the housing it makes checking a home's service line and tap water a reasonable priority.
1 ZIP code (100% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA 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: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Grosse Ile contains 59 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $11,195. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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. The $4,080 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Grosse Ile, MI