Water Quality in Grosse Ile, MI: 1 Violation — Grade C
Grade C · Score 60/100 · 1 water system · Updated 2026-05-03
Grosse Ile's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
The compliance history for Grosse Ile, MI includes 1 water violation on file with the EPA — a federal tally that spans health-based exceedances, monitoring failures, and enforcement actions logged under the Safe Drinking Water Act.
Water Quality by ZIP Code in Grosse Ile
Water quality varies across Grosse Ile's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 48138 | C | 60 | 1 | 0 | View report → |
Water Quality Overview
Grosse Ile, Michigan receives a water quality grade of C with an overall score of 60 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Grosse Ile have accumulated 1 EPA violations (all monitoring/reporting type). These violations are tracked across 1 ZIP codes serving approximately 10,371 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Grosse Ile's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Grosse Ile water systems is 0.0192 mg/L — this exceeds the EPA action level of 0.015 mg/L. 1 ZIP code exceed the EPA lead action level.
With 68% of homes built before 1986, Grosse Ile has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Water Systems Serving Grosse Ile
Grosse Ile is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 10,371 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 5 enforcement actions against water systems serving Grosse Ile. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Grosse Ile
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Grosse Ile Water Systems
The following contaminants have been detected or caused violations across Grosse Ile's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 5 enforcement actions against water systems serving Grosse Ile. Recent actions:
| Date | Action Type |
|---|---|
| 2024-07-06 | State Informal Action |
| 2023-11-27 | State Informal Action |
| 2023-11-27 | State Informal Enforcement |
| 2023-11-09 | State Order Extension |
| 2021-02-01 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2024-07-06.
Grosse Ile vs. Nearby Michigan Cities
How Grosse Ile's water quality compares to similar cities in Michigan:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Grosse Ile | C | 1 | 1 | 10,371 |
| Petoskey | B | 0 | 5 | 10,367 |
| Mc Bain | C | 0 | 1 | 10,355 |
| Paris | C | 0 | 1 | 10,403 |
Common Questions About Grosse Ile Water
These are the most common questions residents search for about water quality in Grosse Ile, Michigan:
Is Grosse Ile water hard or soft? Water hardness varies by source. Grosse Ile's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Grosse Ile tap water? Grosse Ile's water receives a grade of C (60/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Grosse Ile? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Grosse Ile vs. Michigan Average
Understanding how Grosse Ile compares to the broader Michigan average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Grosse Ile.
ZIP Codes in Grosse Ile
Grosse Ile spans 1 ZIP code. The ZIP with the lowest water quality score is 48138. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
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
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.