CS MORMON LAKE WATER COMPANY
Missouri — Community Water System — PWSID: AZ0403014
System Information
| PWSID | AZ0403014 |
| System Name | CS MORMON LAKE WATER COMPANY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Oct 5, 1979 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Missouri |
| City | DES PERES |
| ZIP Code | 63131 |
| Address | — |
| Organization | KRIESS, FRED |
| Phone | 602-698-9786 |
Population & Service
| Population Served | 353 |
| Service Connections | 138 |
Drinking Water Violations (91)
This water system has 91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | Oct 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Archived | Oct 31, 2025 | — | |
| Jul 30, 2025 | — | Other | No | No | — | — | — | Resolved | Sep 22, 2025 | — | |
| Jul 30, 2025 | — | Other | No | No | — | — | — | Resolved | Sep 22, 2025 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2024 | — | |
| Aug 27, 2022 | — | Other | No | No | — | — | — | Resolved | Feb 26, 2024 | — | |
| Aug 27, 2022 | — | Other | No | No | — | — | — | Resolved | Feb 26, 2024 | — | |
| Jul 1, 2021 | Jul 31, 2021 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2021 | — | |
| Jul 1, 2021 | Jul 31, 2021 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2021 | — | |
| Jul 1, 2021 | Jul 31, 2021 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2021 | — | |
| Jul 1, 2021 | Jul 31, 2021 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2021 | — | |
| Sep 1, 2018 | — | RPT | No | No | — | — | — | Resolved | Oct 19, 2018 | — | |
| Sep 1, 2018 | — | RPT | No | No | — | — | — | Resolved | Oct 19, 2018 | — | |
| Aug 1, 2016 | Aug 31, 2016 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2016 | — | |
| Aug 1, 2016 | Aug 31, 2016 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2016 | — | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | — | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | May 31, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Oct 1, 2012 | — | Other | No | No | — | — | — | Resolved | Nov 16, 2012 | — | |
| Feb 1, 2012 | Feb 29, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2012 | — | |
| Feb 1, 2012 | Feb 29, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2012 | — | |
| Oct 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Oct 1, 2011 | — | MR | No | No | — | TT | — | Resolved | Aug 8, 2012 | — | |
| Jul 1, 2011 | — | Other | No | No | — | — | — | Resolved | Aug 4, 2011 | — | |
| Jul 1, 2011 | Sep 30, 2011 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Oct 1, 2010 | — | Other | No | No | — | — | — | Resolved | Aug 4, 2011 | — | |
| Jul 1, 2010 | — | Other | No | No | — | — | — | Resolved | Aug 4, 2011 | — | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2010 | — | |
| Jun 1, 2010 | Jun 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2010 | — | |
| Jun 1, 2010 | Jun 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jul 1, 2009 | — | Other | No | No | — | — | — | Resolved | Aug 4, 2011 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2008 | — | MR | No | No | — | TT | — | Resolved | Aug 8, 2012 | — |
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.