LAKE OZARK, MO · Camden County

BLACKHAWK ESTATES Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of May 17, 2024. 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 Camden 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): MO3036103
System type: Community Water System
Population served: 0
Service connections: 50
Ownership: privately owned
Water source: groundwater (wells)

BLACKHAWK ESTATES formerly served 0 people from groundwater.

EPA's federal records list this system as inactive in 2024; the record below is historical.

As of August 1, 2026, its federal record holds 15 entries between 1992 and 2019, all of which EPA lists as closed. Nothing has been added since 2019.

Of the 15, 5 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 and the Consumer Confidence Rule.

Violation history

Treatment Technique, Corrective/Expedited Actions (RTCR)
Health-based
Revised Total Coliform Rule
July 9, 2019 – December 6, 2019
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2014 – October 2, 2015
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2013 – October 2, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – February 5, 2020
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2006 – October 31, 2006
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – May 15, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2004 – November 30, 2004
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2004 – October 31, 2004
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2004 – November 21, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2004 – July 31, 2004
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2003 – November 21, 2005
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2003 – May 31, 2003
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
April 1, 2003 – April 30, 2003
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2002 – November 21, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1992 – April 30, 1992
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 9, 2019 – December 6, 2019	Treatment Technique, Corrective/Expedited Actions (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
July 1, 2014 – October 2, 2015	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2013 – October 2, 2015	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2012 – February 5, 2020	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2006 – October 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2006 – May 15, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
November 1, 2004 – November 30, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2004 – October 31, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2004 – November 21, 2005	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2004 – July 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2003 – November 21, 2005	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
May 1, 2003 – May 31, 2003	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2003 – April 30, 2003	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2002 – November 21, 2005	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 1992 – April 30, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

February 5, 2020State Compliance achieved1 linked violation
December 6, 2019State Compliance achieved1 linked violation
September 24, 2019State Public Notification received1 linked violation
August 22, 2019State Public Notification requested1 linked violation
August 22, 2019State Formal Notice of Violation issued1 linked violation
November 30, 2018State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 5, 2016State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
October 2, 2015State Compliance achieved2 linked violations
January 22, 2014State Compliance achieved1 linked violation
January 22, 2014State Compliance achieved3 linked violations
January 22, 2014State Compliance achieved10 linked violations
May 15, 2007State Compliance achieved3 linked violations
November 27, 2006State Public Notification requested2 linked violations
October 20, 2006State Public Notification requested3 linked violations
December 3, 2004State Public Notification requested3 linked violations
December 3, 2004State Violation/Reminder Notice2 linked violations
May 26, 2004State Public Notification requested3 linked violations
June 30, 2003State Public Notification requested1 linked violation
May 29, 2003State Public Notification requested2 linked violations

Last known contact on file (system is inactive)

MACKEY, JOHN

573-216-6668

LAKE OZARK, MO 65049-0000