Mountain Lake, MN · Cottonwood County
Mountain Lake Water System
Consumer Confidence Report status
Mountain Lake 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 Mountain Lake.
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 Minnesota’s official records. Always confirm current status with Minnesota before making decisions based on this information.
System facts
- System ID (PWSID)
- MN1170003
- System type
- Community Water System
- Population served
- 2,018
- Service connections
- 827
- Ownership
- local government
- Water source
- groundwater (wells)
Mountain Lake is one of 330 community water systems in Minnesota in the 501 to 3,300 people size category, serving 2,018 people from groundwater.
As of August 1, 2026, its federal record holds 1 entry in 2020, all of which EPA lists as closed. Nothing has been added since 2020.
All 1 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 Lead and Copper Rule.
Violation history
Follow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2020 – September 22, 2021
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2020 – September 22, 2021 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- September 22, 2021State Compliance achieved1 linked violation
- February 23, 2021State Public Notification requested1 linked violation
- January 15, 1992State Public Notification requested1 linked violation
- January 15, 1992State Violation/Reminder Notice1 linked violation
- December 15, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- September 30, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- July 31, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- September 30, 1988State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
Common questions
Is Mountain Lake required to publish a Consumer Confidence Report?
- Yes. Mountain Lake 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 Lake’s next Consumer Confidence Report due?
- Mountain Lake’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does Mountain Lake have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for Mountain Lake.
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
Mountain Lake Public Utilities
5074272999
Mountain Lake, MN 56159-0320