EUREKA, MT · Lincoln County
CARPENTER LAKE HOA Water System
Consumer Confidence Report status
CARPENTER LAKE HOA 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 CARPENTER LAKE HOA.
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 Montana’s official records. Always confirm current status with Montana before making decisions based on this information.
System facts
- System ID (PWSID)
- MT0003694
- System type
- Community Water System
- Population served
- 65
- Service connections
- 36
- Ownership
- privately owned
- Water source
- groundwater (wells)
CARPENTER LAKE HOA is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 65 people from groundwater.
As of August 1, 2026, its federal record holds 11 entries between 1995 and 2025, all of which EPA lists as closed.
Of the 11, 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 Consumer Confidence Rule, and the Lead and Copper Rule.
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
November 1, 2025 – November 30, 2025
ResolvedTreatment Technique, Level 1 Assessment (RTCR)
Health-basedRevised Total Coliform Rule
September 29, 2023 – December 18, 2023
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2015 – July 30, 2015
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
August 1, 2013 – August 31, 2013
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
April 1, 2011 – April 30, 2011
ResolvedMonitoring, Regular
—Asbestos
January 1, 2011 – December 31, 2013
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2008 – August 26, 2008
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 2007 – August 31, 2007
ResolvedInitial Tap Sampling for Pb and Cu
—Lead and Copper Rule
January 1, 1998 – October 31, 2003
ResolvedInitial Tap Sampling for Pb and Cu
—Lead and Copper Rule
January 1, 1996 – April 23, 1998
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
June 1, 1995 – June 30, 1995
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| November 1, 2025 – November 30, 2025 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| September 29, 2023 – December 18, 2023 | Treatment Technique, Level 1 Assessment (RTCR) | Revised Total Coliform Rule | Health-based | Resolved |
| July 1, 2015 – July 30, 2015 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| August 1, 2013 – August 31, 2013 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| April 1, 2011 – April 30, 2011 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| January 1, 2011 – December 31, 2013 | Monitoring, Regular | Asbestos | — | Resolved |
| July 1, 2008 – August 26, 2008 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| August 1, 2007 – August 31, 2007 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 1998 – October 31, 2003 | Initial Tap Sampling for Pb and Cu | Lead and Copper Rule | — | Resolved |
| January 1, 1996 – April 23, 1998 | Initial Tap Sampling for Pb and Cu | Lead and Copper Rule | — | Resolved |
| June 1, 1995 – June 30, 1995 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- December 16, 2025State Compliance achieved1 linked violation
- December 16, 2025State Violation/Reminder Notice3 linked violations
- December 4, 2023State Public Notification requested2 linked violations
- December 4, 2023State Violation/Reminder Notice4 linked violations
- July 30, 2015State Compliance achieved4 linked violations
- June 2, 2014State Public Notification received2 linked violations
- September 25, 2013State Compliance achieved4 linked violations
- April 8, 2011State Violation/Reminder Notice3 linked violations
- August 17, 2008State Public Notification requested1 linked violation
- November 1, 2007State Compliance achieved1 linked violation
- December 31, 2000State Formal Notice of Violation issued3 linked violations
- April 23, 1998State Formal Notice of Violation issued1 linked violation
- December 3, 1996State Formal Notice of Violation issued3 linked violations
Common questions
Is CARPENTER LAKE HOA required to publish a Consumer Confidence Report?
- Yes. CARPENTER LAKE HOA 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 CARPENTER LAKE HOA’s next Consumer Confidence Report due?
- CARPENTER LAKE HOA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CARPENTER LAKE HOA have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CARPENTER LAKE HOA.
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
SIMISTER, BRYAN
406-253-4770
EUREKA, MT 59917