CS EL PRADO WATER COMPANY
Missouri — Community Water System — PWSID: AZ0414442
System Information
| PWSID | AZ0414442 |
| System Name | CS EL PRADO 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 | Nov 17, 2025 |
Location & Contact
| State | Missouri |
| City | DES PERES |
| ZIP Code | 63131 |
| Address | — |
| Organization | KRIESS, FRED |
| Phone | 602-698-9786 |
Population & Service
| Population Served | 404 |
| Service Connections | 158 |
Drinking Water Violations (412)
This water system has 412 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 17, 2025 | — | Public Notice | Other | No | No | — | — | — | Resolved | Sep 18, 2025 | Public Notice Rule and Revised PN Rule |
| Aug 17, 2025 | — | Public Notice | Other | No | No | — | — | — | Resolved | Sep 18, 2025 | Public Notice Rule and Revised PN Rule |
| Aug 17, 2025 | — | Public Notice | Other | No | No | — | — | — | Resolved | Sep 18, 2025 | Public Notice Rule and Revised PN Rule |
| Jul 1, 2025 | Sep 30, 2025 | Arsenic | MCL | Yes | No | .025 MG/L | 0.010 mg/L | .01 | Archived | Sep 30, 2025 | Arsenic Rule |
| Jul 1, 2025 | Sep 30, 2025 | Arsenic | MCL | Yes | No | .025 MG/L | 0.010 mg/L | .01 | Archived | Sep 30, 2025 | Arsenic Rule |
| Jul 1, 2025 | Sep 30, 2025 | Arsenic | MCL | Yes | No | .025 MG/L | 0.010 mg/L | .01 | Archived | Sep 30, 2025 | Arsenic Rule |
| Jul 1, 2025 | Sep 30, 2025 | Arsenic | MCL | Yes | No | .025 MG/L | 0.010 mg/L | .01 | Archived | Sep 30, 2025 | Arsenic Rule |
| Jun 7, 2025 | — | Public Notice | Other | No | No | — | — | — | Resolved | Sep 5, 2025 | Public Notice Rule and Revised PN Rule |
| Jun 7, 2025 | — | Public Notice | Other | No | No | — | — | — | Resolved | Sep 5, 2025 | Public Notice Rule and Revised PN Rule |
| Apr 1, 2025 | Jun 30, 2025 | Arsenic | MCL | Yes | No | .024 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2025 | Arsenic Rule |
| Apr 1, 2025 | Jun 30, 2025 | Arsenic | MCL | Yes | No | .024 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2025 | Arsenic Rule |
| Apr 1, 2025 | Jun 30, 2025 | Arsenic | MCL | Yes | No | .024 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2025 | Arsenic Rule |
| Apr 1, 2025 | Jun 30, 2025 | Arsenic | MCL | Yes | No | .024 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2025 | Arsenic Rule |
| Jan 1, 2025 | Mar 31, 2025 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Mar 31, 2025 | Arsenic Rule |
| Jan 1, 2025 | Mar 31, 2025 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Mar 31, 2025 | Arsenic Rule |
| Jan 1, 2025 | Mar 31, 2025 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Mar 31, 2025 | Arsenic Rule |
| Jan 1, 2025 | Mar 31, 2025 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Mar 31, 2025 | Arsenic Rule |
| Jan 1, 2025 | Mar 31, 2025 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Mar 31, 2025 | Arsenic Rule |
| Jan 1, 2025 | Mar 31, 2025 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Mar 31, 2025 | Arsenic Rule |
| Jan 1, 2025 | Mar 31, 2025 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Mar 31, 2025 | Arsenic Rule |
| Oct 1, 2024 | Dec 31, 2024 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Dec 31, 2024 | Arsenic Rule |
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Oct 1, 2024 | Dec 31, 2024 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Dec 31, 2024 | Arsenic Rule |
| Oct 1, 2024 | Dec 31, 2024 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Dec 31, 2024 | Arsenic Rule |
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Oct 1, 2024 | Dec 31, 2024 | Arsenic | MCL | Yes | No | .021 MG/L | 0.010 mg/L | .01 | Archived | Dec 31, 2024 | Arsenic Rule |
| Jul 1, 2024 | Sep 30, 2024 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Archived | Sep 30, 2024 | Arsenic Rule |
| Jul 1, 2024 | Sep 30, 2024 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Archived | Sep 30, 2024 | Arsenic Rule |
| Jul 1, 2024 | Sep 30, 2024 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Archived | Sep 30, 2024 | Arsenic Rule |
| Apr 1, 2024 | Jun 30, 2024 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2024 | Arsenic Rule |
| Apr 1, 2024 | Jun 30, 2024 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2024 | Arsenic Rule |
| Apr 1, 2024 | Jun 30, 2024 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2024 | Arsenic Rule |
| Apr 1, 2024 | Jun 30, 2024 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Archived | Jun 30, 2024 | Arsenic Rule |
| Apr 1, 2024 | Jun 30, 2024 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 30, 2024 | Arsenic Rule |
| Apr 1, 2024 | Jun 30, 2024 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 30, 2024 | Arsenic Rule |
| Apr 1, 2024 | Jun 30, 2024 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 30, 2024 | Arsenic Rule |
| Mar 1, 2024 | Mar 31, 2024 | Revised Total Coliform Rule | MCL | Yes | No | — | — | — | Resolved | Mar 31, 2024 | Revised Total Coliform Rule |
| Mar 1, 2024 | Mar 31, 2024 | Revised Total Coliform Rule | MCL | Yes | No | — | — | — | Resolved | Mar 31, 2024 | Revised Total Coliform Rule |
| Mar 1, 2024 | Mar 31, 2024 | Revised Total Coliform Rule | MCL | Yes | No | — | — | — | Resolved | Mar 31, 2024 | Revised Total Coliform Rule |
| Jan 1, 2024 | Jan 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | Revised Total Coliform Rule |
| Jan 1, 2024 | Jan 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | Revised Total Coliform Rule |
| Jan 1, 2024 | Jan 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | Revised Total Coliform Rule |
| Jan 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 27, 2024 | Lead and Copper Rule |
| Jan 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 27, 2024 | Lead and Copper Rule |
| Jan 1, 2024 | Jan 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | Revised Total Coliform Rule |
| Oct 13, 2022 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2023 | Lead and Copper Rule |
| Oct 13, 2022 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2023 | Lead and Copper Rule |
| Oct 1, 2022 | Dec 31, 2022 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2022 | Arsenic Rule |
| Oct 1, 2022 | Dec 31, 2022 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2022 | Arsenic Rule |
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.