ST LOUIS, MO · St. Louis city County
ST LOUIS CITY PWS Water System
Consumer Confidence Report status
ST LOUIS CITY PWS must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for ST LOUIS CITY PWS.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.
System facts
- System ID (PWSID)
- MO6010715
- System type
- Community Water System
- Population served
- 304,709
- Service connections
- 96,080
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
ST LOUIS CITY PWS is the third largest community water system in Missouri, serving 304,709 people from surface water.
As of August 1, 2026, its federal record holds 1 entry in 2022, all of which EPA lists as closed. Nothing has been added since 2022.
All 1 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals.
Violation history
Monitoring, Regular
—LASSO
July 1, 2022 – September 30, 2022
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2022 – September 30, 2022 | Monitoring, Regular | LASSO | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is ST LOUIS CITY PWS required to publish a Consumer Confidence Report?
- Yes. ST LOUIS CITY PWS is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is ST LOUIS CITY PWS’s next Consumer Confidence Report due?
- ST LOUIS CITY PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does ST LOUIS CITY PWS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for ST LOUIS CITY PWS.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
PATEL, NIRAJ
314-633-9012
ST LOUIS, MO 63110-0000