Is GRINNELL WATER DEPARTMENT required to publish a Consumer Confidence Report?

Yes. GRINNELL WATER DEPARTMENT 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 GRINNELL WATER DEPARTMENT’s next Consumer Confidence Report due?

GRINNELL WATER DEPARTMENT’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.

GRINNELL, IA · Poweshiek County

GRINNELL WATER DEPARTMENT Water System

Consumer Confidence Report status

GRINNELL WATER DEPARTMENT 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 GRINNELL WATER DEPARTMENT.

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): IA7930008
System type: Community Water System
Population served: 9,564
Service connections: 3,600
Ownership: local government
Water source: groundwater (wells)

GRINNELL WATER DEPARTMENT is one of 91 community water systems in Iowa in the 3,301 to 10,000 people size category, serving 9,564 people from groundwater.

As of August 1, 2026, its federal record holds 16 entries between 1991 and 2026, all of which EPA lists as closed.

Of the 16, 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 the Total Coliform Rules.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2026 – March 31, 2026
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2025 – June 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2025 – March 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
April 1, 2024 – June 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2024 – June 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2024 – March 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
January 1, 2024 – March 31, 2024
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
June 1, 1991 – June 30, 1991
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026 – March 31, 2026	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
October 1, 2025 – December 31, 2025	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Archived
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Archived
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Archived
July 1, 2023 – September 30, 2023	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
June 1, 1991 – June 30, 1991	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

January 20, 2026State Formal Notice of Violation issued3 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued3 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued3 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued3 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued2 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued3 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued4 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued4 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued3 linked violations
August 1, 2025State Administrative/Compliance Order without penalty issued3 linked violations
July 30, 2025State Public Notification received3 linked violations
July 12, 2025State Public Notification received4 linked violations
June 30, 2025State Formal Notice of Violation issued3 linked violations
June 30, 2025State Public Notification requested3 linked violations
June 16, 2025State Public Notification received2 linked violations
June 16, 2025State Public Notification received2 linked violations
June 16, 2025State Public Notification received4 linked violations
June 2, 2025State Formal Notice of Violation issued2 linked violations
June 2, 2025State Public Notification requested4 linked violations
June 2, 2025State Public Notification requested3 linked violations
June 2, 2025State Public Notification requested3 linked violations
May 29, 2025State Formal Notice of Violation issued3 linked violations
May 2, 2025State Public Notification received2 linked violations
April 17, 2025State Public Notification requested3 linked violations
April 17, 2025State Formal Notice of Violation issued2 linked violations
February 25, 2025State Public Notification received8 linked violations
February 25, 2025State Public Notification received3 linked violations
February 25, 2025State Public Notification received3 linked violations
January 28, 2025State Formal Notice of Violation issued3 linked violations
January 28, 2025State Formal Notice of Violation issued3 linked violations
January 28, 2025State Public Notification requested3 linked violations
January 28, 2025State Formal Notice of Violation issued3 linked violations
January 28, 2025State Public Notification requested3 linked violations
January 28, 2025State Public Notification requested3 linked violations
July 1, 2024State Public Notification issued2 linked violations
April 28, 2024State Public Notification received3 linked violations
April 2, 2024State Public Notification received2 linked violations
December 21, 2023State Compliance achieved3 linked violations
December 13, 2023State Formal Notice of Violation issued18 linked violations
December 13, 2023State Public Notification requested4 linked violations
October 31, 2003State Formal Notice of Violation issued4 linked violations
October 10, 1995State Compliance achieved6 linked violations
May 14, 1993State Public Notification requested4 linked violations
February 19, 1993State Public Notification requested3 linked violations
July 31, 1991State Public Notification received1 linked violation

Common questions

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

GRINNELL WATER DEPARTMENT

641-990-7521

GRINNELL, IA 50112-1947