COLO, IA · Story County
COLO WATER SUPPLY Water System
Consumer Confidence Report status
COLO 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 COLO 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)
- IA8520061
- System type
- Community Water System
- Population served
- 853
- Service connections
- 362
- Ownership
- local government
- Water source
- groundwater (wells)
COLO WATER SUPPLY is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 853 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 1998 and 2015, all of which EPA lists as closed. Nothing has been added since 2015.
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 Total Coliform Rules.
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
June 1, 2015 – June 30, 2015
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
February 1, 1998 – March 2, 1998
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| June 1, 2015 – June 30, 2015 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| February 1, 1998 – March 2, 1998 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- November 9, 2016State Public Notification received2 linked violations
- September 20, 2016State Public Notification requested2 linked violations
- September 20, 2016State Formal Notice of Violation issued2 linked violations
- September 29, 1998State Compliance achieved1 linked violation
- September 15, 1998State Formal Notice of Violation issued4 linked violations
- April 20, 1998State Formal Notice of Violation issued3 linked violations
- June 5, 1996State Compliance achieved1 linked violation
- August 20, 1993State Formal Notice of Violation issued2 linked violations
- August 20, 1993State Public Notification requested2 linked violations
- February 1, 1987State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- February 1, 1987State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- March 1, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
Common questions
Is COLO WATER SUPPLY required to publish a Consumer Confidence Report?
- Yes. COLO 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 COLO WATER SUPPLY’s next Consumer Confidence Report due?
- COLO WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does COLO WATER SUPPLY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for COLO 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
COLO WATER SUPPLY
641-377-2238
COLO, IA 50056