CHAMOIS, MO · Osage County
CHAMOIS PWS Water System
Consumer Confidence Report status
CHAMOIS 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 1 item for CHAMOIS PWS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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)
- MO3010155
- System type
- Community Water System
- Population served
- 396
- Service connections
- 240
- Ownership
- local government
- Water source
- groundwater (wells)
CHAMOIS PWS is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 396 people from groundwater.
As of August 1, 2026, its federal record holds 10 entries between 2002 and 2025, of which 1 remains open; none are health-based.
Of the 10, 6 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 the Total Coliform Rules, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Consumer Confidence Rule.
Violation history
Notification, Known or Potential LSL
—LEAD AND COPPER RULE REVISIONS
July 2, 2025
UnaddressedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
September 1, 2023 – September 30, 2023
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
April 1, 2023 – April 30, 2023
ResolvedTreatment Technique No Certif. Operator
Health-basedStage 1 Disinfectants and Disinfection Byproducts Rule
November 23, 2022 – January 8, 2024
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2021 – December 31, 2023
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2021 – December 31, 2023
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2019 – November 25, 2019
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
January 1, 2010 – January 31, 2010
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
November 1, 2004 – November 30, 2004
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2002 – March 29, 2004
Resolved
Unaddressed no corrective action on record yetResolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 2, 2025 | Notification, Known or Potential LSL | LEAD AND COPPER RULE REVISIONS | — | Unaddressed |
| September 1, 2023 – September 30, 2023 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| April 1, 2023 – April 30, 2023 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| November 23, 2022 – January 8, 2024 | Treatment Technique No Certif. Operator | Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-based | Resolved |
| January 1, 2021 – December 31, 2023 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2021 – December 31, 2023 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| July 1, 2019 – November 25, 2019 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| January 1, 2010 – January 31, 2010 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| November 1, 2004 – November 30, 2004 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| July 1, 2002 – March 29, 2004 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is CHAMOIS PWS required to publish a Consumer Confidence Report?
- Yes. CHAMOIS 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 CHAMOIS PWS’s next Consumer Confidence Report due?
- CHAMOIS PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CHAMOIS PWS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for CHAMOIS PWS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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
SLUSSER, MARIE
573-616-8404
CHAMOIS, MO 65024-0000