COBB, WI · Iowa County
COBB WATERWORKS Water System
Consumer Confidence Report status
COBB 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 COBB 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)
- WI1250076
- System type
- Community Water System
- Population served
- 458
- Service connections
- 169
- Ownership
- local government
- Water source
- groundwater (wells)
COBB WATERWORKS is one of 1,289 community water systems in Wisconsin in the 500 or fewer people size category, serving 458 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 1993 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 volatile organic chemicals and the Total Coliform Rules.
Violation history
Monitoring, Regular
—o-Dichlorobenzene
January 1, 2020 – March 31, 2020
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2020 – March 31, 2020
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
August 1, 1993 – August 31, 1993
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2020 – March 31, 2020 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2020 – March 31, 2020 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| August 1, 1993 – August 31, 1993 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- April 13, 2020State Violation/Reminder Notice31 linked violations
- April 13, 2020State Public Notification requested40 linked violations
- September 15, 1993State Public Notification requested1 linked violation
- September 15, 1993State Violation/Reminder Notice1 linked violation
- September 1, 1993State Compliance achievedgeneral compliance action — not tied to a specific violation on record
Common questions
Is COBB WATERWORKS required to publish a Consumer Confidence Report?
- Yes. COBB 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 COBB WATERWORKS’s next Consumer Confidence Report due?
- COBB WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does COBB WATERWORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for COBB 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
RIDER, CARLEY - CLERK/TREASURER
Phone not on record
COBB, WI 53526