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WaterSafeCheck

ZIP Code 48138 Water Quality Report

Grosse Ile, MI · Wayne County County

Safety Score
C

Water Safety Grade

Fair — Some compliance concerns

Health Violations

0

Total Violations

1

Lead Risk

Very High

Contaminants

0

About Tap Water in ZIP Code 48138

Tap water in ZIP code 48138 (Grosse Ile, MI) receives a C grade (score: 60/100) based on EPA monitoring data. While the water from Grosse Ile Township is treated and regulated, this area has a moderate violation history that residents should be aware of.

Water System

Grosse Ile Township

EPA ID: MI0002870

Water Source

Surface Water

Population Served

10,371 residents

County

Wayne County County, Michigan

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Lead Levels in ZIP 48138

EPA action level: 15 ppb | Public health goal: 0 ppb

Lead Level: 19.2 ppb — EXCEEDS EPA Action Level

The 90th percentile lead level in 48138 is 19.2 ppb, which EXCEEDS the EPA action level of 15 ppb. This is a serious concern. The water utility is legally required to notify residents, identify the source of contamination, and take corrective action. Do not give this water to infants, children, or pregnant women without first passing it through a certified NSF/ANSI 53 water filter. Contact Grosse Ile Township immediately for current guidance, or call the EPA Safe Drinking Water Hotline at 1-800-426-4791.

Lead exposure risk in 48138 is rated Very High. EPA models estimate a 75% probability of lead exposure risk in this ZIP code based on housing age, infrastructure age, and water system data. This is among the highest risk categories nationally, often associated with heavily aging infrastructure and pre-1986 construction. Do not give unfiltered tap water to children under 6 or pregnant women. Consider getting your home's plumbing tested for lead solder and fixtures.

Lead Level (90th percentile)
19.20 ppb (0.0192 mg/L)
Lead Exposure Risk Rating
Very High
Lead Exposure Probability

EPA model estimate based on housing age and infrastructure

75%
Note: Lead levels above are the 90th percentile from EPA monitoring — meaning 90% of samples were at or below this level. Even "undetected" tap water lead doesn't account for lead leaching from home plumbing. If your home was built before 1986, individual tap testing is recommended.
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Violation History

Past 5 years — EPA SDWIS data

Grosse Ile Township has recorded 1 violation, but none are health-based. Administrative or reporting violations don't directly indicate unsafe water, but they do signal gaps in documentation or monitoring procedures.

Total Violations (5 yr)
1
Health-Based Violations
0
Unresolved Violations
0
Boil Water Advisories
0
Compliance Risk
Low

Regulatory compliance risk for Grosse Ile Township is rated Low — indicating a consistent track record of meeting EPA reporting and treatment requirements.

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Contaminants Detected

Contaminants with health-based violations on record

No health-based contaminant violations are on record for ZIP code 48138. This means EPA monitoring has not found levels of regulated contaminants exceeding the Maximum Contaminant Levels (MCLs) set under the Safe Drinking Water Act — a positive indicator of water quality compliance.

⚖ Enforcement Actions

5 enforcement actions have been issued against Grosse Ile Township — a high number that reflects sustained compliance struggles. Enforcement actions escalate from administrative orders to financial penalties when utilities repeatedly fail to meet safe drinking water standards.
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Water Source & Environmental Factors

Surface Water

This system draws water from lakes, rivers, or reservoirs. Surface water is treated to remove sediment, microorganisms, and chemical contaminants before reaching taps.

Water Source Type
Surface Water
EPA Radon Zone

Lower potential

Zone 3
Annual Flood Risk Cost

Estimated annual flood-related costs per property

$2
Energy Burden

% of household income spent on energy — indicator of older infrastructure

1.34%

EPA Radon Zone 3 — lower radon potential, though the EPA still recommends testing all homes.

🛡 What Should You Do? — ZIP 48138 Recommendations

  • ⚠ Use a certified NSF/ANSI 53 filter for drinking and cooking water if you have young children
  • ⚠ Never give unfiltered tap water to infants in formula — use certified bottled or filtered water
  • ⚠ Request a copy of the Consumer Confidence Report to see what was detected and when
  • ⚠ Call the EPA Safe Drinking Water Hotline: 1-800-426-4791

Frequently Asked Questions — ZIP 48138 Water Quality

Is tap water safe to drink in ZIP code 48138?+
Tap water in 48138 (Grosse Ile, MI) is treated and regulated, but has a grade of C due to past violations. For most healthy adults, treated tap water is generally safe. Families with infants, young children, or immunocompromised individuals may want to use a certified water filter as a precaution.
What is the lead level in 48138 tap water?+
The 90th percentile lead level in 48138 is 19.2 ppb (parts per billion). The EPA action level is 15 ppb. This exceeds the EPA action level — use a certified lead-reducing water filter.
Who provides tap water to 48138?+
Tap water in ZIP code 48138 is provided by Grosse Ile Township (EPA ID: MI0002870). This system serves approximately 10,371 residents. You can contact them directly for Consumer Confidence Reports, current advisories, and billing information.
What is the water source for 48138?+
ZIP code 48138 is served by surface water. Surface water systems draw from rivers, lakes, or reservoirs and must meet strict EPA treatment requirements including filtration and disinfection.
Does 48138 have any active water quality violations?+
No active violations are on record for ZIP code 48138. EPA data shows this water system is currently in compliance with Safe Drinking Water Act standards.
How do I get a copy of my water quality report for 48138?+
Your water utility — Grosse Ile Township — is required by law to send you an annual Consumer Confidence Report (CCR) by July 1 each year. You can also request it directly from the utility or find it online by searching "Grosse Ile Township Consumer Confidence Report." The EPA's ECHO database also has historical compliance data.
What water filter should I use in 48138?+
The right filter depends on what contaminants are present. For lead, look for a filter certified to NSF/ANSI Standard 53. For chlorine byproducts (like THMs), NSF/ANSI 42 filters work well. For a broad range of contaminants including PFAS, look for NSF/ANSI 58 (reverse osmosis) systems. For ZIP code 48138, with a clean compliance record, a standard carbon block filter meeting NSF/ANSI 42 is a good choice for taste and as a precaution.
Is 48138 tap water safe for babies and infants?+
Infants are especially vulnerable to lead, nitrates, and microbial contaminants in drinking water. Given the detected lead level of 19.2 ppb in 48138, we recommend using a certified NSF/ANSI 53 water filter or certified bottled water for preparing infant formula. Always consult your pediatrician for guidance specific to your child's health.

Data Sources & Methodology

Water quality data for ZIP code 48138 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by Grosse Ile Township. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →