CHESTERFIELD, MO · St. Louis County
MO AMERICAN EUREKA Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of June 30, 2025. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in St. Louis County, MO.
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)
- MO6010258
- System type
- Community Water System
- Population served
- 11,000
- Service connections
- 4,320
- Ownership
- privately owned
- Water source
- groundwater (wells)
MO AMERICAN EUREKA is one of 78 community water systems in Missouri in the 10,001 to 100,000 people size category, formerly serving 11,000 people from groundwater.
EPA's federal records list this system as inactive in 2025; the record below is historical.
As of August 1, 2026, its federal record holds 2 entries between 1993 and 2009, all of which EPA lists as closed. Nothing has been added since 2009.
None of the 2 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Radionuclides and Revised Rad Rule and the Total Coliform Rules.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedGross Alpha, Excl. Radon and U
April 1, 2009 – March 31, 2010
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
November 1, 1993 – November 30, 1993
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2009 – March 31, 2010 | Maximum Contaminant Level Violation, Average | Gross Alpha, Excl. Radon and U | Health-based | Resolved |
| November 1, 1993 – November 30, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- January 22, 2014State Compliance achieved5 linked violations
- February 10, 2010State Intentional no-action7 linked violations
- February 8, 2010State Public Notification requested27 linked violations
Last known contact on file (system is inactive)
MILLER, STEVE
Phone not on record
CHESTERFIELD, MO 63017-0000