Is Grand Island, MI Tap Water Safe to Drink?
Graded B+, with 4 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
83.3/100
waterverge.com Grand Island, MI — Water Quality Report
Grand Island's drinking water received a grade of B+ (83.3 out of 100), indicating good water quality. The city's 1 water system serves approximately 751 residents using groundwater.
Lead levels were measured at 0.9 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 11 violations on record, including 1 health-based violation. 4 remain unresolved.
What to know about Grand Island's water
Grand Island ranks #297 out of 520 cities in Michigan for water quality, placing it below average in the state.
Grand Island relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Grand Island may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Grand Island, MI water safe to drink?
Grand Island's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (83.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 751 residents using groundwater (wells).
Recent water quality updates for Grand Island
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Grand Island's water quality assessment. Grade: B+ (83.3/100).
1 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.
Federal disaster declaration (FEMA DR-4757). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4195). Flood event — may have impacted local water infrastructure.
Contaminants: Consumer Confidence Rule.
Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Grand Island's water supply.
Well within EPA limits.
Violation history
Grand Island's water system has 11 total violations on record, including 1 health-based violation. 4 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Oakland County has experienced 4 federally declared disasters since 1975. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include River Rouge, Upper River Rouge, Middle River Rouge.
Where does Grand Island's water come from?
Grand Island's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 751 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include River Rouge (river), Upper River Rouge (river), Middle River Rouge (river).
What Grand Island residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Grand Island's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Grand Island's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Flood & disaster history
Oakland County has experienced 4 federally declared disasters since 1975. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.9 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Grand Island compares by contaminant
Explore where Grand Island ranks among all Michigan cities for specific contaminants.
Water source & infrastructure
Where Grand Island's water comes from
Grand Island's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by private ownership and serves approximately 751 people through 1 water system.
Water bodies near Grand Island
Grand Island is located near 3 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Grand Island
| System Name | PWSID | Population | Source |
|---|---|---|---|
| SUNLAKE ESTATES | FL3351555 | 751 | GW |
How Grand Island compares
Full Michigan rankings →Grand Island's score of 83.3/100 is above the average of 70/100 among major Michigan cities. It outscores 5 of 10 nearby cities.
Nearby cities
View Michigan rankings →About Grand Island, MI
Wikipedia →Southfield is a city in Oakland County in the U.S. state of Michigan. An inner-ring suburb of Detroit, Southfield lies roughly 15 miles (24.1 km) northwest of downtown Detroit. The city had a population of 76,618 at the 2020 census.
Learn more about your water
Guides and resources related to Grand Island's water quality findings.
Explore water quality across Lake
Frequently asked questions
Is Grand Island, MI tap water safe to drink?
Grand Island's water quality earned a grade of B+ (83.3/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #297 out of 520 cities tested in Michigan.
What contaminants are in Grand Island's water?
Lead was measured at 0.9 ppb (90th percentile). 11 violations are on record.
How is Grand Island's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Grand Island?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Grand Island's water come from?
Grand Island's water is sourced from Groundwater. The city has 1 water system serving approximately 751 residents.
What health violations has Grand Island's water system had?
Grand Island has 1 health-based violation on record. The most recent violation was recorded in February 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 4 violations remain unresolved.
Is Grand Island's groundwater at risk of contamination?
Grand Island uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 11 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Grand Island's water compare to other cities?
Grand Island ranks #297 out of 520 cities in Michigan (better than 43% of state cities) and #6510 out of 15744 cities nationally (59th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Grand Island's small water system affect quality?
Grand Island's system serves approximately 751 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 11 violations on record.