TERRE DU LAC
Missouri - Community Water System - PWSID: MO4036059
System Information
| PWSID | MO4036059 |
| System Name | TERRE DU LAC |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 7, 1980 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Missouri |
| City | DES PERES |
| ZIP Code | 63131-0000 |
| Address | 1630 DES PERES RD STE 140 |
| Organization | SASSEN, ISABEL |
| Phone | 314-464-3964 |
Population & Service
| Population Served | 3,200 |
| Service Connections | 1,351 |
Drinking Water Violations (456)
This water system has 456 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Nov 9, 2020 | - | |
| Mar 5, 2017 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2017 | - | |
| Dec 7, 2016 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2017 | - | |
| Mar 13, 2016 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Mar 13, 2016 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Mar 3, 2016 | - | Other | No | No | - | - | - | Resolved | Jan 6, 2017 | - | |
| Mar 3, 2016 | - | Other | No | No | - | - | - | Resolved | Jan 6, 2017 | - | |
| Mar 3, 2016 | - | Other | No | No | - | - | - | Resolved | Jan 6, 2017 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 10.4 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 10.4 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 10.4 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 10.4 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2016 | - | |
| Oct 1, 2015 | Sep 30, 2016 | MCL | Yes | No | 8.88 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2016 | - | |
| Oct 1, 2015 | Sep 30, 2016 | MCL | Yes | No | 8.88 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2016 | - | |
| Oct 1, 2015 | Sep 30, 2016 | MCL | Yes | No | 8.88 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2016 | - | |
| Oct 1, 2015 | Sep 30, 2016 | MCL | Yes | No | 8.88 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2016 | - | |
| Jul 1, 2015 | Jun 30, 2016 | MCL | Yes | No | 8.43 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2016 | - | |
| Jul 1, 2015 | Jun 30, 2016 | MCL | Yes | No | 8.43 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2016 | - | |
| Jul 1, 2015 | Jun 30, 2016 | MCL | Yes | No | 8.43 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2016 | - | |
| Jul 1, 2015 | Jun 30, 2016 | MCL | Yes | No | 8.43 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2016 | - | |
| Apr 1, 2015 | Mar 31, 2016 | MCL | Yes | No | 8.05 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2016 | - | |
| Apr 1, 2015 | Mar 31, 2016 | MCL | Yes | No | 8.05 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2016 | - | |
| Apr 1, 2015 | Mar 31, 2016 | MCL | Yes | No | 8.05 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2016 | - | |
| Apr 1, 2015 | Mar 31, 2016 | MCL | Yes | No | 8.05 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2016 | - | |
| Apr 1, 2015 | Mar 31, 2016 | MCL | Yes | No | 8.05 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2016 | - | |
| Jan 1, 2015 | Dec 31, 2015 | MCL | Yes | No | 6.2 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2015 | - | |
| Jan 1, 2015 | Dec 31, 2015 | MCL | Yes | No | 6.2 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2015 | - | |
| Jan 1, 2015 | Dec 31, 2015 | MCL | Yes | No | 6.2 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2015 | - | |
| Jan 1, 2015 | Dec 31, 2015 | MCL | Yes | No | 6.2 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2015 | - | |
| Jan 1, 2015 | Dec 31, 2015 | MCL | Yes | No | 6.2 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2015 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Addressed | - | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Addressed | - | - | |
| Jun 11, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Jun 11, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Jun 11, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Jun 11, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| May 13, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| May 13, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Dec 13, 2012 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Dec 13, 2012 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Sep 10, 2012 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Sep 10, 2012 | - | Other | No | No | - | - | - | Resolved | Jun 27, 2016 | - | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | - | - | - | Archived | Sep 30, 2012 | - | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | - | 30 ug/L | - | Archived | Sep 30, 2012 | - | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | - | 30 ug/L | - | Archived | Sep 30, 2012 | - | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | - | - | - | Archived | Sep 30, 2012 | - | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | - | - | - | Archived | Sep 30, 2012 | - | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | - | - | - | Archived | Sep 30, 2012 | - | |
| Jul 1, 2012 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Apr 1, 2012 | Mar 31, 2013 | MCL | Yes | No | 18.93 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2013 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.