Is CALLENDER WATER SUPPLY required to publish a Consumer Confidence Report?

Yes. CALLENDER 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 CALLENDER WATER SUPPLY’s next Consumer Confidence Report due?

CALLENDER WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

FORT DODGE, IA · Webster County

CALLENDER WATER SUPPLY Water System

Consumer Confidence Report status

CALLENDER 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 CALLENDER 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): IA9417063
System type: Community Water System
Population served: 371
Service connections: 188
Ownership: local government
Water source: groundwater (wells)

CALLENDER WATER SUPPLY is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 371 people from groundwater.

As of August 1, 2026, its federal record holds 9 entries between 1978 and 2010, all of which EPA lists as closed. Nothing has been added since 2010.

Of the 9, 4 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 Radionuclides and Revised Rad Rule and inorganic chemicals.

Violation history

Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1995 – June 30, 1996
Resolved
Notification, Public
—
Combined Radium (-226 and -228)
July 1, 1986 – September 30, 1986
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1985 – September 30, 1986
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 1985 – March 31, 1989
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1984 – September 30, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Radium (-226 and -228)
October 1, 1983 – September 30, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Radium (-226 and -228)
October 1, 1978 – September 30, 1982
Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2010 – December 31, 2010	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 1995 – June 30, 1996	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1986 – September 30, 1986	Notification, Public	Combined Radium (-226 and -228)	—	Resolved
October 1, 1985 – September 30, 1986	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
April 1, 1985 – March 31, 1989	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 1984 – September 30, 1985	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
October 1, 1983 – September 30, 1984	Maximum Contaminant Level Violation, Single Sample	Combined Radium (-226 and -228)	Health-based	Archived
October 1, 1978 – September 30, 1982	Maximum Contaminant Level Violation, Single Sample	Combined Radium (-226 and -228)	Health-based	Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

August 4, 2016State Public Notification received3 linked violations
August 19, 2015State Public Notification requested2 linked violations
August 19, 2015State Formal Notice of Violation issued2 linked violations
January 16, 2015State Formal Notice of Violation issued3 linked violations
February 26, 2013State Compliance achieved36 linked violations
December 12, 2012State Public Notification requested4 linked violations
November 20, 2012State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
October 22, 2012State Public Notification requested3 linked violations
August 29, 2012State Compliance achieved4 linked violations
July 23, 2012State Public Notification requested4 linked violations
February 6, 2012State Compliance achieved1 linked violation
November 17, 1997State Compliance achieved7 linked violations
December 4, 1996State Compliance achieved3 linked violations
July 16, 1996State Public Notification received3 linked violations
December 13, 1994State Public Notification received7 linked violations
October 28, 1994State Public Notification requested7 linked violations
August 23, 1993State Public Notification received3 linked violations
July 25, 1990State Compliance achieved1 linked violation
June 19, 1989State Intentional no-action10 linked violations
November 16, 1987State Formal Notice of Violation issued2 linked violations

Common questions

Is CALLENDER WATER SUPPLY required to publish a Consumer Confidence Report?: Yes. CALLENDER 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 CALLENDER WATER SUPPLY’s next Consumer Confidence Report due?: CALLENDER WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CALLENDER WATER SUPPLY have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for CALLENDER 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

CALLENDER WATER SUPPLY

515-571-5070

FORT DODGE, IA 50501