B75/100
Cassopolis Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,815 residents · Michigan
What's In Cassopolis's Tap Water?
0
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
No contaminant data available for this system.
No contaminant testing data available for this utility.
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023 – December 14, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 11, 2021 – November 19, 2021Rule: Total Coliform 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
CASSOPOLIS
Population Served
1,815
Water Source
Groundwater
System ID
MI0001250
Frequently Asked Questions About Cassopolis Water
Is Cassopolis tap water safe to drink?
Cassopolis, Michigan tap water receives a grade of B (75/100), which is considered good. Out of 0 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Cassopolis's water?
0 contaminants were tested in Cassopolis's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Cassopolis have any water quality violations?
Yes, Cassopolis has 13 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, RPT, MCL. 3 of these are health-based violations, which are the most serious category.
Do I need a water filter in Cassopolis?
Cassopolis water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Cassopolis's tap water come from?
Cassopolis's drinking water is sourced from groundwater and supplied by CASSOPOLIS. The system serves approximately 1,815 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Cassopolis'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. Cassopolis'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 Cassopolis's water compare to other cities in Michigan?
Cassopolis's water quality score of 75/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Michigan state page to see how all cities in the state compare.
What should I do if I'm concerned about Cassopolis's water quality?
If you have concerns about Cassopolis'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 (CASSOPOLIS) 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.