A88/100
Grand Blanc Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 29,276 residents · Michigan
What's In Grand Blanc's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – September 27, 2021Enforcement: Resolving — corrective action underway
TIER 2Resolved
Public notification violation
When: July 1, 2021 – December 31, 2021Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
GRAND BLANC, CITY OF
Population Served
8,276
Water Source
Groundwater
System ID
MI0002740
CHARTER TOWNSHIP OF GRAND BLANC
Population Served
21,000
Water Source
Purchased Surface Water
System ID
MI0002745
Frequently Asked Questions About Grand Blanc Water
Is Grand Blanc tap water safe to drink?
Grand Blanc, Michigan tap water receives a grade of A (88/100), which is considered excellent. Out of 70 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 2 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Grand Blanc's water?
Of the 70 contaminants tested in Grand Blanc's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Grand Blanc have any water quality violations?
Yes, Grand Blanc has 9 EPA violation(s) on record, with the most recent in 2022. Violation types include MON, Other, TT. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Grand Blanc?
Based on EPA data, using a water filter in Grand Blanc is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Grand Blanc's tap water come from?
Grand Blanc's drinking water is sourced from groundwater and supplied by GRAND BLANC, CITY OF and 1 other water system(s). The system serves approximately 29,276 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Grand Blanc's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Grand Blanc's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Grand Blanc's water compare to other cities in Michigan?
Grand Blanc's water quality score of 88/100 earns a grade of A, which is considered excellent. This places Grand Blanc among the better-performing water systems in Michigan. Visit our Michigan state page to see how all cities in the state compare.
What should I do if I'm concerned about Grand Blanc's water quality?
If you have concerns about Grand Blanc's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (GRAND BLANC, CITY OF) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.