WI · Dane County
SUN PRAIRIE UTILITIES Water System
Consumer Confidence Report status
SUN PRAIRIE UTILITIES 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 SUN PRAIRIE UTILITIES.
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)
- WI1130258
- System type
- Community Water System
- Population served
- 39,300
- Service connections
- 14,555
- Ownership
- local government
- Water source
- groundwater (wells)
SUN PRAIRIE UTILITIES is among the 17 largest community water systems in Wisconsin, serving 39,300 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries in 2005, all of which EPA lists as closed. Nothing has been added since 2005.
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.
Violation history
Monitoring, Regular
—1,2-Dichloropropane
October 1, 2005 – December 31, 2005
ResolvedMonitoring, Regular
—Toluene
October 1, 2005 – December 31, 2005
ResolvedMonitoring, Regular
—Styrene
October 1, 2005 – December 31, 2005
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2005 – December 31, 2005 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| October 1, 2005 – December 31, 2005 | Monitoring, Regular | Toluene | — | Resolved |
| October 1, 2005 – December 31, 2005 | Monitoring, Regular | Styrene | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is SUN PRAIRIE UTILITIES required to publish a Consumer Confidence Report?
- Yes. SUN PRAIRIE UTILITIES 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 SUN PRAIRIE UTILITIES’s next Consumer Confidence Report due?
- SUN PRAIRIE UTILITIES’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SUN PRAIRIE UTILITIES have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for SUN PRAIRIE UTILITIES.
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