MASON, MI · Ingham County
MASON, CITY OF Water System
Consumer Confidence Report status
MASON, CITY OF 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 MASON, CITY OF.
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)
- MI0004170
- System type
- Community Water System
- Population served
- 8,252
- Service connections
- 3,200
- Ownership
- local government
- Water source
- groundwater (wells)
MASON, CITY OF is one of 165 community water systems in Michigan in the 3,301 to 10,000 people size category, serving 8,252 people from groundwater.
As of August 1, 2026, EPA's published records contain no violations for this system.
Violation history
No violations on record for this system.
Enforcement actions
- September 4, 2024State Compliance achieved7 linked violations
- August 1, 2024State Public Notification received4 linked violations
- November 30, 2023State Compliance achieved2 linked violations
- November 2, 2023State Violation/Reminder Notice1 linked violation
- August 15, 2023State Public Notification requested3 linked violations
- May 4, 2022State Compliance achieved4 linked violations
- November 23, 2008State Public Notification received10 linked violations
- April 10, 2007State Public Notification received10 linked violations
Common questions
Is MASON, CITY OF required to publish a Consumer Confidence Report?
- Yes. MASON, CITY OF 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 MASON, CITY OF’s next Consumer Confidence Report due?
- MASON, CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MASON, CITY OF have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MASON, CITY OF.
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
REWERTS, JEFF
517-290-5681
MASON, MI 48854