SEBASTIAN LAKE UTILITY OPERATING COMPANY
PWSID: AR0000511 · Des Peres, MO · Serves 298 people
According to EPA Safe Drinking Water Information System (SDWIS), SEBASTIAN LAKE UTILITY OPERATING COMPANY (PWSID AR0000511) in Des Peres, MO is listed as a CWS water system covering about 298 people. The same extract lists 11 health-based violation records spanning 2022-2023. Those 11 health-based rows for SEBASTIAN LAKE UTILITY OPERATING COMPANY cover contaminants such as TTHM; they remain historical EPA registry entries, not a current compliance or drinkability score.
SEBASTIAN LAKE UTILITY OPERATING COMPANY has 11 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. 1 distinct EPA contaminant code appears in this system's record, including TTHM. Recorded violations span 2022–2023. 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)
- AR0000511
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Des Peres, MO
- Population Served
- 298
- Health Violations
- Yes (11)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 11 | 11 |
Violation History (11)
Frequently Asked Questions
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Compare beyond Missouri
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest SEBASTIAN LAKE UTILITY OPERATING COMPANY on cumulative violation count (11) and EPA-reported population served (298). Violation-count peers include MICCOSUKEE TRIBE OF INDIANS, Arizona Village, WHITE SWAN.
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
SEBASTIAN LAKE UTILITY OPERATING COMPANY (AR0000511) 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 (11 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.