MT STERLING, WI · Crawford County
MOUNT STERLING WATERWORKS Water System
Consumer Confidence Report status
MOUNT STERLING 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 MOUNT STERLING 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)
- WI6120246
- System type
- Community Water System
- Population served
- 206
- Service connections
- 76
- Ownership
- local government
- Water source
- groundwater (wells)
MOUNT STERLING WATERWORKS is one of 1,289 community water systems in Wisconsin in the 500 or fewer people size category, serving 206 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 1994 and 2024, all of which EPA lists as closed.
Of the 2, 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.
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
July 1, 2024 – July 31, 2024
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 1994 – September 30, 1994
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2024 – July 31, 2024 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| September 1, 1994 – September 30, 1994 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- October 27, 2025State Public Notification received11 linked violations
- October 24, 2025State Public Notification requested10 linked violations
- January 27, 2025State Violation/Reminder Notice40 linked violations
- October 25, 1994State Public Notification received1 linked violation
- September 30, 1994State Compliance achieved2 linked violations
- September 26, 1994State Violation/Reminder Notice1 linked violation
- September 26, 1994State Public Notification requested1 linked violation
Common questions
Is MOUNT STERLING WATERWORKS required to publish a Consumer Confidence Report?
- Yes. MOUNT STERLING 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 MOUNT STERLING WATERWORKS’s next Consumer Confidence Report due?
- MOUNT STERLING WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MOUNT STERLING WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MOUNT STERLING 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
JONES, KIMBERLY - MT STERLING VIL CLERK
Phone not on record
MT STERLING, WI 54645-0067