Dayton, MN · Hennepin County
Dayton Water System
Consumer Confidence Report status
Dayton 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 Dayton.
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)
- MN1270073
- System type
- Community Water System
- Population served
- 4,985
- Service connections
- 3,322
- Ownership
- local government
- Water source
- groundwater (wells)
Dayton is one of 90 community water systems in Minnesota in the 3,301 to 10,000 people size category, serving 4,985 people from groundwater.
As of August 1, 2026, its federal record holds 1 entry in 2025, all of which EPA lists as closed.
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 Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring and Reporting (DBP)
—Chlorine
October 1, 2025 – December 31, 2025
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2025 – December 31, 2025 | Monitoring and Reporting (DBP) | Chlorine | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- January 31, 2026State Compliance achieved1 linked violation
- January 20, 2026State Public Notification requested1 linked violation
- January 20, 2026State Formal Notice of Violation issued1 linked violation
- January 20, 2026State Formal Notice of Violation issued1 linked violation
- January 20, 2026State Public Notification requested1 linked violation
- October 28, 2014State Public Notification requested4 linked violations
- October 28, 2014State Formal Notice of Violation issued4 linked violations
- October 20, 2014State Compliance achieved2 linked violations
Common questions
Is Dayton required to publish a Consumer Confidence Report?
- Yes. Dayton 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 Dayton’s next Consumer Confidence Report due?
- Dayton’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does Dayton have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for Dayton.
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
c/o Ms. Amy Benting, City Clerk & Asst City Administrator
7634211791
Dayton, MN 55327-9655