CASSOPOLIS, MI · Cass County
CASSOPOLIS Water System
Consumer Confidence Report status
CASSOPOLIS must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for CASSOPOLIS.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Michigan’s official records. Always confirm current status with Michigan before making decisions based on this information.
System facts
- System ID (PWSID)
- MI0001250
- System type
- Community Water System
- Population served
- 1,815
- Service connections
- 842
- Ownership
- local government
- Water source
- groundwater (wells)
CASSOPOLIS is one of 499 community water systems in Michigan in the 501 to 3,300 people size category, serving 1,815 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 2020 and 2026, all of which EPA lists as closed.
All 3 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Stage 1 Disinfectants and Disinfection Byproducts Rule, the Total Coliform Rules, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring and Reporting (DBP)
—Chlorine
March 1, 2026 – March 31, 2026
ArchivedReport Sample Result/Fail Monitor (RTCR)
—Revised Total Coliform Rule
October 11, 2021 – November 19, 2021
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
October 1, 2020 – September 30, 2021
Resolved
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| March 1, 2026 – March 31, 2026 | Monitoring and Reporting (DBP) | Chlorine | — | Archived |
| October 11, 2021 – November 19, 2021 | Report Sample Result/Fail Monitor (RTCR) | Revised Total Coliform Rule | — | Resolved |
| October 1, 2020 – September 30, 2021 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- September 27, 2022State Compliance achieved11 linked violations
- June 29, 2022State Public Notification received30 linked violations
Common questions
Is CASSOPOLIS required to publish a Consumer Confidence Report?
- Yes. CASSOPOLIS is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CASSOPOLIS’s next Consumer Confidence Report due?
- CASSOPOLIS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CASSOPOLIS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CASSOPOLIS.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
LAGROW, EMILIE
269-445-8648
CASSOPOLIS, MI 49031