MARKESAN, WI · Green Lake County
MARKESAN WATERWORKS Water System
Consumer Confidence Report status
MARKESAN WATERWORKS 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 MARKESAN WATERWORKS.
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 Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.
System facts
- System ID (PWSID)
- WI4240218
- System type
- Community Water System
- Population served
- 1,365
- Service connections
- 505
- Ownership
- local government
- Water source
- groundwater (wells)
MARKESAN WATERWORKS is one of 333 community water systems in Wisconsin in the 501 to 3,300 people size category, serving 1,365 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
No enforcement actions on record for this system.
Common questions
Is MARKESAN WATERWORKS required to publish a Consumer Confidence Report?
- Yes. MARKESAN WATERWORKS 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 MARKESAN WATERWORKS’s next Consumer Confidence Report due?
- MARKESAN WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MARKESAN WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MARKESAN WATERWORKS.
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
MARKESAN CITY OF - CLERK
Phone not on record
MARKESAN, WI 53946