Oslo, MN · Marshall County

Oslo Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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): MN1450008
System type: Community Water System
Population served: 242
Service connections: 186
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2014 – September 30, 2014
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2014 – September 30, 2014
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2014 – September 30, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	Chlorine	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

July 17, 2018State Compliance achieved1 linked violation
February 23, 2018State Public Notification received1 linked violation
January 16, 2018State Formal Notice of Violation issued1 linked violation
January 16, 2018State Public Notification requested1 linked violation
December 11, 2017State Violation/Reminder Notice1 linked violation
October 16, 2017State Violation/Reminder Notice1 linked violation
September 1, 2017State Violation/Reminder Notice1 linked violation
October 28, 2014State Formal Notice of Violation issued3 linked violations
October 28, 2014State Public Notification requested3 linked violations
October 22, 2014State Compliance achieved3 linked violations

Contact

Oslo City Council

2186953841

Oslo, MN 56744-0187