CS EL PRADO WATER COMPANY
PWSID: AZ0414442 · Des Peres, MO · Serves 404 people
According to EPA Safe Drinking Water Information System (SDWIS), CS EL PRADO WATER COMPANY (PWSID AZ0414442) in Des Peres, MO is listed as a CWS water system covering about 404 people. The same extract lists 118 health-based violation records spanning 2007-2025. Those 118 health-based rows for CS EL PRADO WATER COMPANY cover contaminants such as Arsenic, Groundwater Rule, Revised Total Coliform Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
CS EL PRADO WATER COMPANY has 118 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 3 distinct EPA contaminant codes appear in this system's record, including Arsenic, Groundwater Rule, Revised Total Coliform Rule. Recorded violations span 2007–2025. Day-to-day primacy enforcement for this system runs through the Missouri drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Missouri state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- AZ0414442
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Des Peres, MO
- Population Served
- 404
- Health Violations
- Yes (118)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Arsenic | 103 | 103 |
| Groundwater Rule | 12 | 12 |
| Revised Total Coliform Rule | 3 | 3 |
Violation History (118)
| Contaminant | Health | Date |
|---|---|---|
| Arsenic | Yes | Jul 1, 2025 |
| Arsenic | Yes | Apr 1, 2025 |
| Arsenic | Yes | Apr 1, 2025 |
| Arsenic | Yes | Jan 1, 2025 |
| Arsenic | Yes | Jan 1, 2025 |
| Arsenic | Yes | Jan 1, 2025 |
| Arsenic | Yes | Oct 1, 2024 |
| Arsenic | Yes | Oct 1, 2024 |
| Arsenic | Yes | Jul 1, 2024 |
| Arsenic | Yes | Jul 1, 2024 |
| Arsenic | Yes | Apr 1, 2024 |
| Arsenic | Yes | Apr 1, 2024 |
| Arsenic | Yes | Apr 1, 2024 |
| Revised Total Coliform Rule | Yes | Mar 1, 2024 |
| Revised Total Coliform Rule | Yes | Mar 1, 2024 |
| Revised Total Coliform Rule | Yes | Mar 1, 2024 |
| Arsenic | Yes | Oct 1, 2022 |
| Arsenic | Yes | Oct 1, 2022 |
| Arsenic | Yes | Oct 1, 2022 |
| Arsenic | Yes | Oct 1, 2022 |
| Arsenic | Yes | Jul 1, 2022 |
| Arsenic | Yes | Jul 1, 2022 |
| Arsenic | Yes | Jul 1, 2022 |
| Arsenic | Yes | Jul 1, 2022 |
| Arsenic | Yes | Apr 1, 2022 |
| Arsenic | Yes | Apr 1, 2022 |
| Arsenic | Yes | Apr 1, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 10, 2022 |
| Groundwater Rule | Yes | Mar 2, 2022 |
| Groundwater Rule | Yes | Mar 2, 2022 |
| Groundwater Rule | Yes | Mar 2, 2022 |
| Arsenic | Yes | Jan 1, 2022 |
| Arsenic | Yes | Jan 1, 2022 |
| Arsenic | Yes | Jan 1, 2022 |
| Arsenic | Yes | Oct 1, 2021 |
| Arsenic | Yes | Oct 1, 2021 |
| Arsenic | Yes | Oct 1, 2021 |
| Arsenic | Yes | Jul 1, 2021 |
| Arsenic | Yes | Jul 1, 2021 |
| Arsenic | Yes | Jul 1, 2021 |
| Arsenic | Yes | Apr 1, 2021 |
| Arsenic | Yes | Apr 1, 2021 |
| Arsenic | Yes | Apr 1, 2021 |
| Arsenic | Yes | Jan 1, 2021 |
| Arsenic | Yes | Jan 1, 2021 |
| Arsenic | Yes | Jan 1, 2021 |
| Arsenic | Yes | Oct 1, 2020 |
| Arsenic | Yes | Oct 1, 2020 |
| Arsenic | Yes | Oct 1, 2020 |
| Arsenic | Yes | Jul 10, 2019 |
| Arsenic | Yes | Jul 10, 2019 |
| Arsenic | Yes | Jul 10, 2019 |
| Arsenic | Yes | Apr 1, 2019 |
| Arsenic | Yes | Apr 1, 2019 |
| Arsenic | Yes | Apr 1, 2019 |
| Arsenic | Yes | Jan 1, 2019 |
| Arsenic | Yes | Jan 1, 2019 |
| Arsenic | Yes | Jan 1, 2019 |
| Arsenic | Yes | Oct 1, 2018 |
| Arsenic | Yes | Oct 1, 2018 |
| Arsenic | Yes | Oct 1, 2018 |
| Arsenic | Yes | Jul 1, 2018 |
| Arsenic | Yes | Jul 1, 2018 |
| Arsenic | Yes | Jul 1, 2018 |
| Arsenic | Yes | Apr 1, 2018 |
| Arsenic | Yes | Apr 1, 2018 |
| Arsenic | Yes | Apr 1, 2018 |
| Arsenic | Yes | Jan 1, 2018 |
| Arsenic | Yes | Jan 1, 2018 |
| Arsenic | Yes | Jan 1, 2018 |
| Arsenic | Yes | Jul 1, 2016 |
| Arsenic | Yes | Jul 1, 2016 |
| Arsenic | Yes | Jul 1, 2016 |
| Arsenic | Yes | Apr 1, 2016 |
| Arsenic | Yes | Apr 1, 2016 |
| Arsenic | Yes | Apr 1, 2016 |
| Arsenic | Yes | Jan 1, 2016 |
| Arsenic | Yes | Jan 1, 2016 |
| Arsenic | Yes | Jan 1, 2016 |
| Arsenic | Yes | Oct 1, 2015 |
| Arsenic | Yes | Oct 1, 2015 |
| Arsenic | Yes | Oct 1, 2015 |
| Arsenic | Yes | Oct 1, 2012 |
| Arsenic | Yes | Oct 1, 2012 |
| Arsenic | Yes | Jul 1, 2012 |
| Arsenic | Yes | Jul 1, 2012 |
| Arsenic | Yes | Apr 1, 2012 |
| Arsenic | Yes | Apr 1, 2012 |
| Arsenic | Yes | Jan 1, 2012 |
| Arsenic | Yes | Jan 1, 2012 |
| Arsenic | Yes | Oct 1, 2011 |
| Arsenic | Yes | Oct 1, 2011 |
Frequently Asked Questions
What does EPA SDWIS list for CS EL PRADO WATER COMPANY?
How many people does CS EL PRADO WATER COMPANY serve?
What violations does CS EL PRADO WATER COMPANY have?
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Compare beyond Missouri
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest CS EL PRADO WATER COMPANY on cumulative violation count (118) and EPA-reported population served (404). Violation-count peers include LAND PROJECTS MUTUAL WATER CO., CAMERON PARISH WW DISTRICT 7, TIPTON.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
CS EL PRADO WATER COMPANY (AZ0414442) is drawn from EPA SDWIS. Nearby county systems in this extract include MO AMERICAN ST LOUIS ST CHARLES COUNTIES; KIRKWOOD PWS; JEFFERSON COUNTY PWSD 2; MO AMERICAN MEXICO. Health-based rows (118 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.