B78/100
MOUNT PLEASANT — Water Quality Report 2026
Serving 21,688 people · Michigan
Water Source
Surface Water
County
—
System ID
MI0004530
Violations
4
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.60 mg/L | 1.30 mg/L | Over Limit |
chlorate | 300.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
1
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 31, 2023Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved
Violation related to Nitrate
When: September 1, 2022Rule: Surface Water Treatment 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
Frequently Asked Questions About MOUNT PLEASANT
Is MOUNT PLEASANT water safe to drink?
MOUNT PLEASANT water receives a grade of B (78/100), which is considered good. Out of 70 contaminants tested, 1 exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has MOUNT PLEASANT detected?
70 contaminants were tested in MOUNT PLEASANT's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does MOUNT PLEASANT have any EPA violations?
Yes, MOUNT PLEASANT has 4 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, TT. 1 are health-based violations.
How many people does MOUNT PLEASANT serve?
MOUNT PLEASANT serves approximately 21,688 people, Michigan. The system provides water to 1 community: Mount Pleasant.
What type of water does MOUNT PLEASANT provide?
MOUNT PLEASANT sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is MI0004530.
How does MOUNT PLEASANT compare to other utilities in Michigan?
MOUNT PLEASANT scores 78/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Michigan state page for a full comparison of water systems.