WENTZVILLE, MO · St. Charles County
WENTZVILLE PWS Water System
Consumer Confidence Report status
WENTZVILLE PWS 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 WENTZVILLE PWS 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 Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.
System facts
- System ID (PWSID)
- MO6010849
- System type
- Community Water System
- Population served
- 41,784
- Service connections
- 16,546
- Ownership
- local government
- Water source
- groundwater (wells)
WENTZVILLE PWS is among the 15 largest community water systems in Missouri, serving 41,784 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 1991 and 2025, of which 1 remains open; none are health-based.
All 2 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 and the Total Coliform Rules.
Violation history
Notification, Known or Potential LSL
—LEAD AND COPPER RULE REVISIONS
July 2, 2025
UnaddressedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
May 1, 1991 – May 31, 1991
Resolved
Unaddressed no corrective action on record yetResolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 2, 2025 | Notification, Known or Potential LSL | LEAD AND COPPER RULE REVISIONS | — | Unaddressed |
| May 1, 1991 – May 31, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the state
Enforcement actions
- January 23, 2019State Compliance achieved1 linked violation
- October 16, 2018State Public Notification received1 linked violation
- September 26, 2018State Public Notification requested1 linked violation
- September 26, 2018State Violation/Reminder Notice1 linked violation
- January 22, 2014State Compliance achieved6 linked violations
- January 22, 2014State Compliance achieved3 linked violations
- October 12, 2007State Public Notification received3 linked violations
- September 18, 2007State Violation/Reminder Notice1 linked violation
- September 18, 2007State Public Notification requested1 linked violation
- August 8, 2005State Public Notification received1 linked violation
- July 1, 2005State Public Notification requested1 linked violation
- July 1, 2005State Violation/Reminder Notice1 linked violation
- January 12, 2004State Public Notification received4 linked violations
- June 25, 1991State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
Common questions
Is WENTZVILLE PWS required to publish a Consumer Confidence Report?
- Yes. WENTZVILLE PWS 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 WENTZVILLE PWS’s next Consumer Confidence Report due?
- WENTZVILLE PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WENTZVILLE PWS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for WENTZVILLE PWS 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
DEZORT, DEVON
636-639-2054
WENTZVILLE, MO 63385-0000