CALAMUS, IA · Clinton County

CALAMUS WATER SUPPLY Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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 Iowa’s official records. Always confirm current status with Iowa before making decisions based on this information.

System facts

System ID (PWSID): IA2320062
System type: Community Water System
Population served: 356
Service connections: 185
Ownership: local government
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – August 30, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
April 1, 2020 – April 30, 2020
Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Unaddressed
July 1, 2021 – August 30, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2020 – April 30, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

August 28, 2025State Formal Notice of Violation issued1 linked violation
August 30, 2021State Compliance achieved1 linked violation
August 26, 2021State Formal Notice of Violation issued3 linked violations
May 22, 2020State Compliance achieved4 linked violations
May 18, 2020State Public Notification requested2 linked violations
February 10, 1997State Public Notification received1 linked violation
February 3, 1997State Compliance achieved1 linked violation
February 3, 1997State Compliance achieved1 linked violation
January 7, 1997State Formal Notice of Violation issued1 linked violation
January 7, 1997State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 7, 1997State Public Notification requested2 linked violations
January 7, 1997State Formal Notice of Violation issued1 linked violation
January 7, 1997State Public Notification requested1 linked violation
January 7, 1997State Public Notification requested2 linked violations
October 7, 1994State Public Notification received9 linked violations
September 27, 1994State Public Notification requested3 linked violations

Contact

CALAMUS WATER SUPPLY

563-246-2755

CALAMUS, IA 52729