WILTON, WI · Monroe County
WILTON WATERWORKS Water System
Consumer Confidence Report status
WILTON 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 WILTON 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)
- WI6420306
- System type
- Community Water System
- Population served
- 490
- Service connections
- 263
- Ownership
- local government
- Water source
- groundwater (wells)
WILTON WATERWORKS is one of 1,289 community water systems in Wisconsin in the 500 or fewer people size category, serving 490 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 1993 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.
None of the 2 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 Stage 1 Disinfectants and Disinfection Byproducts Rule and the Total Coliform Rules.
Violation history
Treatment Technique No Certif. Operator
Health-basedStage 1 Disinfectants and Disinfection Byproducts Rule
November 2, 2022 – November 8, 2022
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
August 1, 1993 – August 31, 1993
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| November 2, 2022 – November 8, 2022 | Treatment Technique No Certif. Operator | Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-based | Resolved |
| August 1, 1993 – August 31, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- October 1, 1993State Public Notification issued1 linked violation
- September 15, 1993State Public Notification issued1 linked violation
- September 9, 1993State Compliance achieved1 linked violation
- September 3, 1993State Violation/Reminder Notice1 linked violation
- September 3, 1993State Public Notification requested1 linked violation
Common questions
Is WILTON WATERWORKS required to publish a Consumer Confidence Report?
- Yes. WILTON 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 WILTON WATERWORKS’s next Consumer Confidence Report due?
- WILTON WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WILTON WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for WILTON 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
OIUM, CASEY - WILTON VILLAGE CLERK
Phone not on record
WILTON, WI 54670