B75/100
CROSWELL, CITY OF — Water Quality Report 2026
Serving 2,447 people · Michigan
Water Source
Groundwater
County
—
System ID
MI0001690
Violations
10
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.40 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2023 – September 30, 2023Enforcement: 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 CROSWELL, CITY OF
Is CROSWELL, CITY OF water safe to drink?
CROSWELL, CITY OF water receives a grade of B (75/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CROSWELL, CITY OF detected?
2 contaminants were tested in CROSWELL, CITY OF's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CROSWELL, CITY OF have any EPA violations?
Yes, CROSWELL, CITY OF has 10 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, Other, MCL. 1 are health-based violations.
How many people does CROSWELL, CITY OF serve?
CROSWELL, CITY OF serves approximately 2,447 people, Michigan. The system provides water to 1 community: Croswell.
What type of water does CROSWELL, CITY OF provide?
CROSWELL, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MI0001690.
How does CROSWELL, CITY OF compare to other utilities in Michigan?
CROSWELL, CITY OF scores 75/100 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.