Dennison, MN · Goodhue County

Dennison 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): MN1250021
System type: Community Water System
Population served: 220
Service connections: 93
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 1, 2025 – December 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
April 1, 2025 – June 30, 2025
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2022 – December 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2022 – December 31, 2022
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – December 31, 2025	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Archived
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Archived
October 1, 2022 – December 31, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2022 – December 31, 2022	Monitoring and Reporting (DBP)	Chlorine	—	Archived

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

Enforcement actions

January 8, 2026State Public Notification requested1 linked violation
January 8, 2026State Compliance Meeting conducted1 linked violation
January 8, 2026State Formal Notice of Violation issued1 linked violation
January 2, 2026State Administrative/Compliance Order without penalty issued1 linked violation
January 2, 2026State Administrative/Compliance Order without penalty issued1 linked violation
January 2, 2026State Administrative/Compliance Order without penalty issued1 linked violation
December 31, 2025State Public Notification received1 linked violation
October 23, 2025State Formal Notice of Violation issued1 linked violation
October 23, 2025State Public Notification requested1 linked violation
October 23, 2025State Compliance Meeting conducted1 linked violation
September 2, 2025State Public Notification received1 linked violation
July 30, 2025State Formal Notice of Violation issued1 linked violation
July 30, 2025State Public Notification requested1 linked violation
July 30, 2025State Compliance Meeting conducted1 linked violation
April 10, 2023State Public Notification received1 linked violation
February 1, 2023State Compliance achieved1 linked violation
January 10, 2023State Formal Notice of Violation issued1 linked violation
January 10, 2023State Public Notification requested1 linked violation
January 10, 2023State Formal Notice of Violation issued1 linked violation
January 10, 2023State Public Notification requested1 linked violation
December 5, 2022State Violation/Reminder Notice1 linked violation
September 20, 2002State Compliance achieved3 linked violations
March 4, 2002State Public Notification received3 linked violations
February 26, 2001State Public Notification received3 linked violations
February 20, 2001State Formal Notice of Violation issued3 linked violations
February 20, 2001State Intentional no-action2 linked violations
May 26, 1995State Compliance achieved2 linked violations
April 26, 1995State Compliance Meeting conducted2 linked violations
April 26, 1995State Violation/Reminder Notice2 linked violations

Contact

Dennison City Council

5076457732

Dennison, MN 55018