Is MOUNTAIN GROVE PWS required to publish a Consumer Confidence Report?

Yes. MOUNTAIN GROVE 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 MOUNTAIN GROVE PWS’s next Consumer Confidence Report due?

MOUNTAIN GROVE 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.

MOUNTAIN GROVE, MO · Wright County

MOUNTAIN GROVE PWS Water System

Consumer Confidence Report status

MOUNTAIN GROVE 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 MOUNTAIN GROVE 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): MO5010550
System type: Community Water System
Population served: 4,789
Service connections: 2,043
Ownership: local government
Water source: groundwater (wells)

MOUNTAIN GROVE PWS is one of 140 community water systems in Missouri in the 3,301 to 10,000 people size category, serving 4,789 people from groundwater.

As of August 1, 2026, its federal record holds 18 entries between 1991 and 2025, of which 1 remains open; none are health-based.

Of the 18, 4 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

Notification, Known or Potential LSL
—
LEAD AND COPPER RULE REVISIONS
July 2, 2025
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – December 10, 2025
Resolved
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – October 25, 2024
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2023 – November 1, 2023
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2021 – December 6, 2021
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2019 – November 26, 2019
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2007 – August 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2007 – July 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2007 – May 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2006 – October 31, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2006 – August 31, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 2006 – March 31, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2005 – July 31, 2005
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2003 – March 31, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2001 – November 30, 2001
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2001 – October 31, 2001
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1996 – September 30, 1996
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 1991 – February 28, 1991
Archived

Unaddressed no corrective action on record yetResolved 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
July 2, 2025	Notification, Known or Potential LSL	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
July 1, 2025 – December 10, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 17, 2024 – October 25, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Resolved
July 1, 2023 – November 1, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2021 – December 6, 2021	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2019 – November 26, 2019	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
August 1, 2007 – August 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2007 – July 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2007 – May 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2006 – October 31, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2006 – August 31, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 2006 – March 31, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2005 – July 31, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2003 – March 31, 2003	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
November 1, 2001 – November 30, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2001 – October 31, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 1996 – September 30, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
February 1, 1991 – February 28, 1991	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

March 11, 2026State Public Notification received2 linked violations
November 17, 2025State Public Notification received3 linked violations
October 16, 2025State Public Notification requested2 linked violations
October 16, 2025State Violation/Reminder Notice2 linked violations
November 26, 2019State Compliance achieved2 linked violations
November 26, 2019State Compliance achieved2 linked violations
January 22, 2014State Compliance achieved5 linked violations
May 18, 2012State Compliance achieved10 linked violations
August 15, 2007State Public Notification received11 linked violations
August 10, 2007State Public Notification received3 linked violations
August 10, 2007State Public Notification requested3 linked violations
May 25, 2007State Public Notification requested3 linked violations
December 8, 2006State Public Notification received3 linked violations

Common questions

Is MOUNTAIN GROVE PWS required to publish a Consumer Confidence Report?: Yes. MOUNTAIN GROVE 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 MOUNTAIN GROVE PWS’s next Consumer Confidence Report due?: MOUNTAIN GROVE PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MOUNTAIN GROVE PWS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for MOUNTAIN GROVE 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

BATES, DAKOTA

417-293-3996

MOUNTAIN GROVE, MO 65711-0000