Tomahawk, WI · Lincoln County
TOMAHAWK WATERWORKS Water System
Consumer Confidence Report status
TOMAHAWK 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 TOMAHAWK 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)
- WI7350127
- System type
- Community Water System
- Population served
- 3,180
- Service connections
- 1,500
- Ownership
- local government
- Water source
- groundwater (wells)
TOMAHAWK WATERWORKS is one of 333 community water systems in Wisconsin in the 501 to 3,300 people size category, serving 3,180 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)
October 1, 1993 – October 31, 1993
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 1993 – October 31, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- November 22, 2011Federal Compliance achieved2 linked violations
- June 23, 2011Federal issued Formal Notice of Violation2 linked violations
- November 18, 1993State Public Notification received1 linked violation
- November 9, 1993State Public Notification issued2 linked violations
- November 4, 1993State Compliance achieved1 linked violation
- November 2, 1993State Public Notification requested1 linked violation
- November 2, 1993State Violation/Reminder Notice1 linked violation
Common questions
Is TOMAHAWK WATERWORKS required to publish a Consumer Confidence Report?
- Yes. TOMAHAWK 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 TOMAHAWK WATERWORKS’s next Consumer Confidence Report due?
- TOMAHAWK WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does TOMAHAWK WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for TOMAHAWK 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
TOMAHAWK CITY CLERK- AMANDA L BARTZ
Phone not on record
Tomahawk, WI 54487