Oronoco, MN · Olmsted County
Oronoco Water System
Consumer Confidence Report status
Oronoco 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 Oronoco.
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)
- MN1550036
- System type
- Community Water System
- Population served
- 2,040
- Service connections
- 656
- Ownership
- local government
- Water source
- groundwater (wells)
Oronoco is one of 330 community water systems in Minnesota in the 501 to 3,300 people size category, serving 2,040 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries in 2021, all of which EPA lists as closed. Nothing has been added since 2021.
All 2 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 2 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
July 1, 2021 – October 13, 2021
ResolvedMonitoring and Reporting (DBP)
—TTHM
July 1, 2021 – October 13, 2021
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2021 – October 13, 2021 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| July 1, 2021 – October 13, 2021 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- October 13, 2021State Compliance achieved2 linked violations
- September 29, 2021State Violation/Reminder Notice2 linked violations
Common questions
Is Oronoco required to publish a Consumer Confidence Report?
- Yes. Oronoco 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 Oronoco’s next Consumer Confidence Report due?
- Oronoco’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does Oronoco have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for Oronoco.
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
Oronoco City Council
5073674405
Oronoco, MN 55960-0195