SHAWANO, WI · Shawano County
SHAWANO WATERWORKS Water System
Consumer Confidence Report status
SHAWANO 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 SHAWANO 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)
- WI4590456
- System type
- Community Water System
- Population served
- 9,610
- Service connections
- 3,735
- Ownership
- local government
- Water source
- groundwater (wells)
SHAWANO WATERWORKS is one of 102 community water systems in Wisconsin in the 3,301 to 10,000 people size category, serving 9,610 people from groundwater.
As of August 1, 2026, its federal record holds 1 entry in 1993, all of which EPA lists as closed. Nothing has been added since 1993.
None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Total Coliform Rules.
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
February 1, 1993 – February 28, 1993
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| February 1, 1993 – February 28, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- March 31, 1993State Compliance achieved1 linked violation
- February 19, 1993State Violation/Reminder Notice1 linked violation
- February 19, 1993State Public Notification requested1 linked violation
Common questions
Is SHAWANO WATERWORKS required to publish a Consumer Confidence Report?
- Yes. SHAWANO 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 SHAWANO WATERWORKS’s next Consumer Confidence Report due?
- SHAWANO WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SHAWANO WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for SHAWANO 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
MAHLOCH, MICHAEL - PUBLIC WORKS DIRECTOR
Phone not on record
SHAWANO, WI 54166