MATTOON, WI · Shawano County
MATTOON WATERWORKS Water System
Consumer Confidence Report status
MATTOON 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 MATTOON 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)
- WI4590455
- System type
- Community Water System
- Population served
- 450
- Service connections
- 180
- Ownership
- local government
- Water source
- groundwater (wells)
MATTOON WATERWORKS is one of 1,289 community water systems in Wisconsin in the 500 or fewer people size category, serving 450 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 2007 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.
All 2 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 Total Coliform Rules and the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
July 1, 2020 – July 31, 2020
ResolvedMonitoring and Reporting (DBP)
—Chlorine
April 1, 2007 – June 30, 2007
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2020 – July 31, 2020 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| April 1, 2007 – June 30, 2007 | Monitoring and Reporting (DBP) | Chlorine | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is MATTOON WATERWORKS required to publish a Consumer Confidence Report?
- Yes. MATTOON 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 MATTOON WATERWORKS’s next Consumer Confidence Report due?
- MATTOON WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MATTOON WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MATTOON 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
MATTOON VIL CLERK - ANGIE COPAS
Phone not on record
MATTOON, WI 54450