CS TIERRA MESA ESTATES WATER COMPANY
PWSID: AZ0414080 · Des Peres, MO · Serves 632 people
CS TIERRA MESA ESTATES WATER COMPANY has 47 health-based violations out of 47 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
CS TIERRA MESA ESTATES WATER COMPANY (PWSID AZ0414080) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 632 people in Des Peres, MO, and is subject to primacy enforcement by the Missouri drinking-water program.
The system's federal compliance record contains 47 total violations, with 47 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Lead (Action Level). Recorded violations span 2020–2025.
A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time 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)
- AZ0414080
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Des Peres, MO
- Population Served
- 632
- Health Violations
- Yes (47)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Lead (Action Level) | 47 | 47 |
Violation History (47)
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.