OTO, IA · Woodbury County
OTO WATER SUPPLY Water System
Consumer Confidence Report status
OTO WATER SUPPLY 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 OTO WATER SUPPLY.
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 Iowa’s official records. Always confirm current status with Iowa before making decisions based on this information.
System facts
- System ID (PWSID)
- IA9758023
- System type
- Community Water System
- Population served
- 72
- Service connections
- 54
- Ownership
- local government
- Water source
- groundwater (wells)
OTO WATER SUPPLY is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 72 people from groundwater.
As of August 1, 2026, its federal record holds 7 entries between 1993 and 2024, all of which EPA lists as closed.
Of the 7, 5 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 Total Coliform Rules, the Consumer Confidence Rule, and the Lead and Copper Rule.
Violation history
Lead Consumer Notice
—Lead and Copper Rule
October 1, 2024 – January 30, 2025
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2024 – August 22, 2024
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2021 – September 29, 2021
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
April 1, 2008 – April 30, 2008
ResolvedMonitoring, Regular
—Nitrate
July 1, 2002 – June 30, 2003
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
September 1, 1993 – September 30, 1993
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
September 1, 1993 – September 30, 1993
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2024 – January 30, 2025 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| July 1, 2024 – August 22, 2024 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2021 – September 29, 2021 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| April 1, 2008 – April 30, 2008 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2002 – June 30, 2003 | Monitoring, Regular | Nitrate | — | Resolved |
| September 1, 1993 – September 30, 1993 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 1993 – September 30, 1993 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- January 27, 2025State Formal Notice of Violation issued2 linked violations
- July 15, 2003State Formal Notice of Violation issued6 linked violations
- November 8, 1999State Violation/Reminder Notice4 linked violations
- June 24, 1996State Formal Notice of Violation issued23 linked violations
- November 19, 1993State Public Notification received17 linked violations
- November 19, 1993State Public Notification received6 linked violations
- November 19, 1993State Public Notification requested4 linked violations
- August 25, 1989State Compliance achieved3 linked violations
- October 29, 1988State Compliance achieved2 linked violations
- October 19, 1988State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- October 19, 1988State Formal Notice of Violation issued1 linked violation
- October 19, 1988State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- September 26, 1988State Compliance achieved9 linked violations
- September 17, 1988State Public Notification requested8 linked violations
- September 17, 1988State Formal Notice of Violation issued8 linked violations
- September 30, 1984Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record
Common questions
Is OTO WATER SUPPLY required to publish a Consumer Confidence Report?
- Yes. OTO WATER SUPPLY 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 OTO WATER SUPPLY’s next Consumer Confidence Report due?
- OTO WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OTO WATER SUPPLY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for OTO WATER SUPPLY.
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
OTO WATER SUPPLY
712-870-2092
OTO, IA 51044