ST. CHARLES, MO · St. Charles County
FLO ANN SUBD Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of November 1, 1984. 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. Charles 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)
- MO6036200
- System type
- Community Water System
- Population served
- 25
- Service connections
- 11
- Ownership
- privately owned
- Water source
- groundwater (wells)
FLO ANN SUBD is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, formerly serving 25 people from groundwater.
EPA's federal records list this system as inactive in 1984; the record below is historical.
As of August 1, 2026, its federal record holds 3 entries in 1982, all of which EPA lists as closed. Nothing has been added since 1982.
None of the 3 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 inorganic chemicals.
Violation history
Maximum Contaminant Level Violation, Single Sample
Health-basedFluoride
May 9, 1982 – October 8, 1984
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedFluoride
May 9, 1982 – October 8, 1983
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedFluoride
May 9, 1982 – October 8, 1982
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| May 9, 1982 – October 8, 1984 | Maximum Contaminant Level Violation, Single Sample | Fluoride | Health-based | Archived |
| May 9, 1982 – October 8, 1983 | Maximum Contaminant Level Violation, Single Sample | Fluoride | Health-based | Archived |
| May 9, 1982 – October 8, 1982 | Maximum Contaminant Level Violation, Single Sample | Fluoride | Health-based | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Last known contact on file (system is inactive)
Not on record
314-723-6895
ST. CHARLES, MO 63301