WATERLOO, WI · Jefferson County
WATERLOO WATERWORKS Water System
Consumer Confidence Report status
WATERLOO 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 WATERLOO 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)
- WI1280115
- System type
- Community Water System
- Population served
- 3,520
- Service connections
- 1,303
- Ownership
- local government
- Water source
- groundwater (wells)
WATERLOO WATERWORKS is one of 102 community water systems in Wisconsin in the 3,301 to 10,000 people size category, serving 3,520 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 1993 and 2017, all of which EPA lists as closed. Nothing has been added since 2017.
Of the 3, 1 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 Lead and Copper Rule.
Violation history
Water Quality Parameter M/R
—Lead and Copper Rule
June 1, 2017 – November 30, 2017
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 1993 – September 30, 1993
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
August 1, 1993 – August 25, 1993
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| June 1, 2017 – November 30, 2017 | Water Quality Parameter M/R | Lead and Copper Rule | — | Resolved |
| September 1, 1993 – September 30, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| August 1, 1993 – August 25, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- January 5, 2018State Public Notification received45 linked violations
- October 15, 1993State Compliance achieved1 linked violation
- October 11, 1993State Public Notification received1 linked violation
- October 4, 1993State Formal Notice of Violation issued1 linked violation
- October 4, 1993State Violation/Reminder Notice1 linked violation
- August 30, 1993State Public Notification received1 linked violation
- August 25, 1993State Compliance achieved1 linked violation
- August 20, 1993State Public Notification requested1 linked violation
- August 20, 1993State Violation/Reminder Notice1 linked violation
Common questions
Is WATERLOO WATERWORKS required to publish a Consumer Confidence Report?
- Yes. WATERLOO 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 WATERLOO WATERWORKS’s next Consumer Confidence Report due?
- WATERLOO WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WATERLOO WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for WATERLOO 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
SORENSON, BARRY
Phone not on record
WATERLOO, WI 53594-1459