PORTAGE DES SIOUX, MO · St. Charles County
PORTAGE DES SIOUX PWS Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
- MO6010657
- System type
- Community Water System
- Population served
- 345
- Service connections
- 165
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Consumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2019 – November 26, 2019
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
April 1, 2019 – April 30, 2019
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
June 1, 2016 – June 30, 2016
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
February 7, 2016 – September 9, 2019
ResolvedFailure To Address Deficiency
Health-basedGroundwater Rule
October 24, 2015 – February 4, 2019
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
June 1, 2014 – June 30, 2014
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2013 – September 2, 2014
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
June 1, 2013 – June 30, 2013
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
March 1, 2013 – March 31, 2013
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
December 1, 2010 – December 31, 2010
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
November 1, 2010 – November 30, 2010
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
September 1, 2010 – September 30, 2010
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
August 1, 2007 – August 31, 2007
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2003 – September 10, 2004
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 1995 – September 30, 1995
ArchivedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
July 1, 1995 – July 31, 1995
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
November 1, 1993 – November 30, 1993
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
September 1, 1993 – September 30, 1993
Resolved
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 |
|---|---|---|---|---|
| July 1, 2019 – November 26, 2019 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| April 1, 2019 – April 30, 2019 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| June 1, 2016 – June 30, 2016 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| February 7, 2016 – September 9, 2019 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| October 24, 2015 – February 4, 2019 | Failure To Address Deficiency | Groundwater Rule | Health-based | Resolved |
| June 1, 2014 – June 30, 2014 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2013 – September 2, 2014 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| June 1, 2013 – June 30, 2013 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| March 1, 2013 – March 31, 2013 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| December 1, 2010 – December 31, 2010 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| November 1, 2010 – November 30, 2010 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 2010 – September 30, 2010 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| August 1, 2007 – August 31, 2007 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2003 – September 10, 2004 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| September 1, 1995 – September 30, 1995 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| July 1, 1995 – July 31, 1995 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| November 1, 1993 – November 30, 1993 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 1993 – September 30, 1993 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Contact
WARNER, MARK D
636-899-0640
PORTAGE DES SIOUX, MO 63373-0000