LAKE GENEVA, WI · Walworth County
LAKE COMO SANITARY DIST 1 Water System
Consumer Confidence Report status
LAKE COMO SANITARY DIST 1 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 LAKE COMO SANITARY DIST 1.
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)
- WI2651536
- System type
- Community Water System
- Population served
- 3,038
- Service connections
- 1,332
- Ownership
- local government
- Water source
- groundwater (wells)
LAKE COMO SANITARY DIST 1 is one of 333 community water systems in Wisconsin in the 501 to 3,300 people size category, serving 3,038 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 2005 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.
All 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 Stage 2 Disinfectants and Disinfection Byproducts Rule, the Radionuclides and Revised Rad Rule, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring and Reporting (DBP)
—TTHM
January 1, 2020 – December 31, 2020
ResolvedMonitoring, Regular
—Radium-228
April 1, 2008 – June 30, 2008
ResolvedMonitoring and Reporting (DBP)
—Chlorine
July 1, 2005 – September 14, 2005
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2020 – December 31, 2020 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| April 1, 2008 – June 30, 2008 | Monitoring, Regular | Radium-228 | — | Resolved |
| July 1, 2005 – September 14, 2005 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- May 20, 2009State Public Notification received47 linked violations
- March 20, 2009State Public Notification requested55 linked violations
- October 19, 2005State Violation/Reminder Notice76 linked violations
Common questions
Is LAKE COMO SANITARY DIST 1 required to publish a Consumer Confidence Report?
- Yes. LAKE COMO SANITARY DIST 1 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 LAKE COMO SANITARY DIST 1’s next Consumer Confidence Report due?
- LAKE COMO SANITARY DIST 1’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LAKE COMO SANITARY DIST 1 have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for LAKE COMO SANITARY DIST 1.
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
LAKE COMO SANITARY DISTRICT #1
Phone not on record
LAKE GENEVA, WI 53147