A98/100
Caledonia Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 42,037 residents · Michigan
What's In Caledonia's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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
BYRON-GAINES UTILITY AUTHORITY
Population Served
37,464
Water Source
Purchased Surface Water
System ID
MI0001023
CALEDONIA TOWNSHIP
Population Served
4,573
Water Source
Groundwater
System ID
MI0001039
Frequently Asked Questions About Caledonia Water
Is Caledonia tap water safe to drink?
Caledonia, Michigan tap water receives a grade of A (98/100), 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 Caledonia's water?
Of the 70 contaminants tested in Caledonia'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 Caledonia have any water quality violations?
No, Caledonia has zero EPA violations on record. This means the water utility has consistently met all federal drinking water standards during the compliance periods tracked by the EPA.
Do I need a water filter in Caledonia?
Based on EPA data, using a water filter in Caledonia 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 Caledonia's tap water come from?
Caledonia's drinking water is sourced from purchased surface water and supplied by BYRON-GAINES UTILITY AUTHORITY and 1 other water system(s). The system serves approximately 42,037 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Caledonia'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. Caledonia'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 Caledonia's water compare to other cities in Michigan?
Caledonia's water quality score of 98/100 earns a grade of A, which is considered excellent. This places Caledonia 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 Caledonia's water quality?
If you have concerns about Caledonia'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 (BYRON-GAINES UTILITY AUTHORITY) 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.