WI · Waukesha County
MUSKEGO WATER UTILITY Water System
Consumer Confidence Report status
MUSKEGO WATER UTILITY 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 1 item for MUSKEGO WATER UTILITY that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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)
- WI2681741
- System type
- Community Water System
- Population served
- 8,150
- Service connections
- 3,018
- Ownership
- local government
- Water source
- groundwater (wells)
MUSKEGO WATER UTILITY is one of 102 community water systems in Wisconsin in the 3,301 to 10,000 people size category, serving 8,150 people from groundwater.
As of August 1, 2026, its federal record holds 6 entries between 2003 and 2024, of which 1 remains open; none are health-based.
Of the 6, 3 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 Lead and Copper Rule, synthetic organic chemicals, and the Public Notice Rule and Revised PN Rule.
Violation history
LSL Inventory
Health-basedLEAD AND COPPER RULE REVISIONS
October 17, 2024 – May 19, 2025
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
October 17, 2024
UnaddressedLead Consumer Notice
—Lead and Copper Rule
January 1, 2024 – April 16, 2024
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2017 – July 6, 2017
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
June 1, 2005 – June 23, 2005
ResolvedMonitoring, Regular
—Atrazine
October 1, 2003 – December 31, 2003
Resolved
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 17, 2024 – May 19, 2025 | LSL Inventory | LEAD AND COPPER RULE REVISIONS | Health-based | Resolved |
| October 17, 2024 | Public Notification Violation for NPDWR Violation | Public Notice | — | Unaddressed |
| January 1, 2024 – April 16, 2024 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| January 1, 2017 – July 6, 2017 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| June 1, 2005 – June 23, 2005 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| October 1, 2003 – December 31, 2003 | Monitoring, Regular | Atrazine | — | Resolved |
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
Enforcement actions
- June 30, 2015State Public Notification issued35 linked violations
- January 27, 1993State Violation/Reminder Notice1 linked violation
- January 27, 1993State Public Notification requested1 linked violation
- November 30, 1992State Compliance achieved1 linked violation
Common questions
Is MUSKEGO WATER UTILITY required to publish a Consumer Confidence Report?
- Yes. MUSKEGO WATER UTILITY 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 MUSKEGO WATER UTILITY’s next Consumer Confidence Report due?
- MUSKEGO WATER UTILITY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MUSKEGO WATER UTILITY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for MUSKEGO WATER UTILITY that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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