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

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

NORWALK 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.

NORWALK, IA · Warren County

NORWALK WATER SUPPLY Water System

Consumer Confidence Report status

NORWALK 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 NORWALK 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): IA9164078
System type: Community Water System
Population served: 14,334
Service connections: 5,982
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

NORWALK WATER SUPPLY is one of 50 community water systems in Iowa in the 10,001 to 100,000 people size category, serving 14,334 people from surface water.

As of August 1, 2026, its federal record holds 4 entries between 1993 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.

Of the 4, 3 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 Minor (TCR)
—
Coliform (TCR)
August 1, 2011 – August 31, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2003 – July 31, 2003
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 2001 – August 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1993 – July 31, 1993
Archived

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
August 1, 2011 – August 31, 2011	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2003 – July 31, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2001 – August 31, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1993 – July 31, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

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

Enforcement actions

July 1, 2012State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 18, 2012State Formal Notice of Violation issued1 linked violation
November 13, 2003State Compliance achieved1 linked violation
August 14, 2003State Public Notification received3 linked violations
July 21, 2003State Public Notification requested3 linked violations
October 8, 2001State Public Notification received3 linked violations
January 31, 2000State Compliance achieved4 linked violations
October 25, 1993State Intentional no-action2 linked violations
February 27, 1991State Public Notification received1 linked violation
February 14, 1991State Formal Notice of Violation issued1 linked violation
February 14, 1991State Public Notification requested1 linked violation
January 31, 1991State Compliance achieved1 linked violation
March 1, 1987State Compliance achieved1 linked violation
November 1, 1986State Formal Notice of Violation issued1 linked violation
October 1, 1986State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record

Common questions

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

NORWALK WATER SUPPLY

515-981-9527

NORWALK, IA 50211-1417