Is KOSHKONONG PWS required to publish a Consumer Confidence Report?

Yes. KOSHKONONG 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 KOSHKONONG PWS’s next Consumer Confidence Report due?

KOSHKONONG PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

KOSHKONONG, MO · Oregon County

KOSHKONONG PWS Water System

Consumer Confidence Report status

KOSHKONONG 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 no open violations for KOSHKONONG PWS.

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): MO4010434
System type: Community Water System
Population served: 212
Service connections: 104
Ownership: local government
Water source: groundwater (wells)

KOSHKONONG PWS is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 212 people from groundwater.

As of August 1, 2026, its federal record holds 11 entries between 1993 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 11, 7 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 Consumer Confidence Rule, and the Lead and Copper Rule.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2023 – November 30, 2023
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2020 – November 9, 2020
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2012 – May 21, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2006 – July 31, 2006
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2005 – November 30, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – May 14, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2005 – May 31, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2002 – January 16, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1996 – August 31, 1996
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1995 – December 31, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1993 – March 31, 1993
Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
November 1, 2023 – November 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2020 – November 9, 2020	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2012 – May 21, 2012	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2006 – July 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2005 – November 30, 2005	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2005 – May 14, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
May 1, 2005 – May 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2002 – January 16, 2003	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
August 1, 1996 – August 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 1995 – December 31, 1994	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
March 1, 1993 – March 31, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is KOSHKONONG PWS required to publish a Consumer Confidence Report?: Yes. KOSHKONONG 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 KOSHKONONG PWS’s next Consumer Confidence Report due?: KOSHKONONG PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does KOSHKONONG PWS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for KOSHKONONG PWS.
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

JOHNSON, JENNIFER

417-293-2830

KOSHKONONG, MO 65692-0000