CALAMUS, IA · Clinton County
CALAMUS WATER SUPPLY Water System
Consumer Confidence Report status
CALAMUS 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 1 item for CALAMUS WATER SUPPLY that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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)
- IA2320062
- System type
- Community Water System
- Population served
- 356
- Service connections
- 185
- Ownership
- local government
- Water source
- groundwater (wells)
CALAMUS WATER SUPPLY is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 356 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 2002 and 2025, of which 1 remains open; none are health-based.
Of the 2, 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 Consumer Confidence Rule and the Lead and Copper Rule.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2025
UnaddressedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2002 – July 8, 2003
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 |
| October 1, 2002 – July 8, 2003 | Follow-up Or Routine LCR Tap M/R | Lead and Copper 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
- July 10, 2020State Public Notification received2 linked violations
- May 18, 2020State Public Notification requested2 linked violations
- July 8, 2003State Compliance achieved4 linked violations
- February 27, 2003State Formal Notice of Violation issued2 linked violations
- March 17, 1997State Compliance achieved4 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 Public Notification requested1 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
- September 27, 1994State Public Notification requested3 linked violations
Common questions
Is CALAMUS WATER SUPPLY required to publish a Consumer Confidence Report?
- Yes. CALAMUS 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 CALAMUS WATER SUPPLY’s next Consumer Confidence Report due?
- CALAMUS WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CALAMUS WATER SUPPLY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for CALAMUS WATER SUPPLY that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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
CALAMUS WATER SUPPLY
563-246-2755
CALAMUS, IA 52729