CEDAR HILL, MO · Jefferson County
LAKE ADELLE SUBD Water System
Consumer Confidence Report status
LAKE ADELLE SUBD 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 LAKE ADELLE SUBD 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)
- MO6036077
- System type
- Community Water System
- Population served
- 380
- Service connections
- 161
- Ownership
- privately owned
- Water source
- groundwater (wells)
LAKE ADELLE SUBD is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 380 people from groundwater.
As of August 1, 2026, its federal record holds 13 entries between 1991 and 2025, of which 1 remains open; none are health-based.
Of the 13, 8 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 Public Notice Rule and Revised PN Rule, and the Consumer Confidence Rule.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2025
UnaddressedLSL Reporting
—LEAD AND COPPER RULE REVISIONS
October 17, 2024 – August 22, 2025
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
March 1, 2023 – March 31, 2023
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
May 1, 2012 – May 31, 2012
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
September 21, 2006 – December 6, 2019
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
May 25, 2006 – December 6, 2019
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
May 1, 2006 – May 31, 2006
ResolvedMaximum Contaminant Level Violation, Acute (TCR)
Health-basedColiform (TCR)
April 1, 2006 – April 22, 2006
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
August 1, 2004 – August 31, 2004
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
May 1, 2004 – May 31, 2004
ResolvedMonitoring, Repeat Major (TCR)
—Coliform (TCR)
April 1, 2004 – April 30, 2004
ResolvedMonitoring, Repeat Major (TCR)
—Coliform (TCR)
September 1, 2003 – September 30, 2003
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
September 1, 1991 – September 30, 1991
Resolved
Unaddressed no corrective action on record yetResolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2025 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Unaddressed |
| October 17, 2024 – August 22, 2025 | LSL Reporting | LEAD AND COPPER RULE REVISIONS | — | Resolved |
| March 1, 2023 – March 31, 2023 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| May 1, 2012 – May 31, 2012 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| September 21, 2006 – December 6, 2019 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| May 25, 2006 – December 6, 2019 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| May 1, 2006 – May 31, 2006 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| April 1, 2006 – April 22, 2006 | Maximum Contaminant Level Violation, Acute (TCR) | Coliform (TCR) | Health-based | Resolved |
| August 1, 2004 – August 31, 2004 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| May 1, 2004 – May 31, 2004 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| April 1, 2004 – April 30, 2004 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 2003 – September 30, 2003 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 1991 – September 30, 1991 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | 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 LAKE ADELLE SUBD required to publish a Consumer Confidence Report?
- Yes. LAKE ADELLE SUBD 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 LAKE ADELLE SUBD’s next Consumer Confidence Report due?
- LAKE ADELLE SUBD’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LAKE ADELLE SUBD have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for LAKE ADELLE SUBD 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
DIEDRICH, JERRY
636-274-2674
CEDAR HILL, MO 63016-0000