WI · Dane County
MIDDLETON WATERWORKS Water System
Consumer Confidence Report status
MIDDLETON 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 MIDDLETON 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)
- WI1130242
- System type
- Community Water System
- Population served
- 23,868
- Service connections
- 8,840
- Ownership
- local government
- Water source
- groundwater (wells)
MIDDLETON WATERWORKS is one of 87 community water systems in Wisconsin in the 10,001 to 100,000 people size category, serving 23,868 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries in 2023, all of which EPA lists as closed. Nothing has been added since 2023.
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 synthetic organic chemicals.
Violation history
Monitoring, Regular
—Atrazine
January 1, 2023 – November 14, 2023
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2023 – November 14, 2023
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2023 – November 14, 2023 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2023 – November 14, 2023 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- November 14, 2023State Compliance achieved57 linked violations
Common questions
Is MIDDLETON WATERWORKS required to publish a Consumer Confidence Report?
- Yes. MIDDLETON 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 MIDDLETON WATERWORKS’s next Consumer Confidence Report due?
- MIDDLETON WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MIDDLETON WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MIDDLETON 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
Not on record
Phone not on record