Is TWIN KNOLLS FOURTH/FIFTH ADDITION required to publish a Consumer Confidence Report?

Yes. TWIN KNOLLS FOURTH/FIFTH ADDITION 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 TWIN KNOLLS FOURTH/FIFTH ADDITION’s next Consumer Confidence Report due?

TWIN KNOLLS FOURTH/FIFTH ADDITION’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.

CEDAR RAPIDS, IA · Linn County

TWIN KNOLLS FOURTH/FIFTH ADDITION Water System

Consumer Confidence Report status

TWIN KNOLLS FOURTH/FIFTH ADDITION 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 TWIN KNOLLS FOURTH/FIFTH ADDITION 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): IA5784326
System type: Community Water System
Population served: 90
Service connections: 36
Ownership: privately owned
Water source: groundwater (wells)

TWIN KNOLLS FOURTH/FIFTH ADDITION is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 90 people from groundwater.

As of August 1, 2026, its federal record holds 12 entries between 1991 and 2023, of which 1 remains open; none are health-based.

Of the 12, 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 Public Notice Rule and Revised PN Rule, the Total Coliform Rules, and the Consumer Confidence Rule.

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
May 13, 2023 – July 3, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 13, 2022 – June 30, 2022
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2022 – July 3, 2023
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 1, 2021 – November 9, 2023
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 1, 2018
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
April 1, 2014 – June 30, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 1, 2013 – July 1, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – September 17, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2012 – June 30, 2012
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
May 1, 2010 – May 31, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1991 – November 30, 1991
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1991 – September 30, 1991
Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Period	Violation	Contaminant / rule	Health-based	Status
May 13, 2023 – July 3, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 13, 2022 – June 30, 2022	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2022 – July 3, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 1, 2021 – November 9, 2023	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
December 1, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
April 1, 2014 – June 30, 2014	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2013 – July 1, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2013 – September 17, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2010 – May 31, 2010	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 1991 – November 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 1991 – September 30, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

August 20, 2025State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
August 20, 2025State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
June 20, 2025State Formal Notice of Violation issued1 linked violation
February 23, 2025State Compliance achieved1 linked violation
February 20, 2025State Formal Notice of Violation issued1 linked violation
February 20, 2025State Public Notification requested1 linked violation
January 24, 2025State Formal Notice of Violation issued1 linked violation
November 9, 2023State Compliance achieved2 linked violations
August 31, 2023State Compliance achieved2 linked violations
July 3, 2023State Public Notification received2 linked violations
July 3, 2023State Compliance achieved2 linked violations
June 22, 2023State Formal Notice of Violation issued7 linked violations
November 17, 2022State Violation/Reminder Notice1 linked violation
November 17, 2022State Intentional no-action1 linked violation
November 17, 2022State Formal Notice of Violation issued1 linked violation
October 19, 2022State Public Notification requested2 linked violations
October 19, 2022State Public Notification requested2 linked violations
October 19, 2022State Formal Notice of Violation issued2 linked violations
August 17, 2022State Formal Notice of Violation issued1 linked violation
August 17, 2022State Intentional no-action1 linked violation
June 30, 2022State Public Notification issued1 linked violation
June 30, 2022State Compliance achieved1 linked violation
June 30, 2022State Compliance achieved1 linked violation
June 13, 2022State Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 12, 2022State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
May 12, 2022State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
May 12, 2022State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
May 12, 2022State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 27, 2022State Formal Notice of Violation issued1 linked violation
October 22, 2021State Compliance achievedgeneral compliance action — not tied to a specific violation on record
October 11, 2021State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 15, 2021State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 28, 2019State Formal Notice of Violation issued1 linked violation
June 23, 2017State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 11, 2016State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 11, 2016State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
July 11, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 18, 2014State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 18, 2014State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
July 2, 2014State Public Notification received1 linked violation
June 30, 2014State Compliance achieved1 linked violation
June 30, 2014State Compliance achieved1 linked violation
June 30, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
June 30, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
June 30, 2014State Compliance achieved1 linked violation
June 30, 2014State Compliance achieved1 linked violation
May 14, 2014State Intentional no-action1 linked violation
May 14, 2014State Violation/Reminder Notice1 linked violation
May 14, 2014State Formal Notice of Violation issued1 linked violation
January 21, 2014State Formal Notice of Violation issued1 linked violation
January 21, 2014State Violation/Reminder Notice1 linked violation
January 21, 2014State Intentional no-action1 linked violation
September 17, 2013State Compliance achieved1 linked violation
September 3, 2013State Public Notification requested1 linked violation
September 3, 2013State Formal Notice of Violation issued1 linked violation
August 20, 2013State Intentional no-action1 linked violation
August 20, 2013State Formal Notice of Violation issued1 linked violation
August 20, 2013State Violation/Reminder Notice1 linked violation
August 20, 2013State Formal Notice of Violation issued1 linked violation
August 20, 2013State Violation/Reminder Notice1 linked violation
August 20, 2013State Intentional no-action1 linked violation
August 1, 2013State Compliance achieved1 linked violation
July 1, 2013State Compliance achieved1 linked violation
June 30, 2013State Compliance achieved1 linked violation
June 30, 2013State Compliance achieved2 linked violations
June 30, 2013State Compliance achieved1 linked violation
June 30, 2013State Public Notification received1 linked violation
June 30, 2013State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
June 30, 2013State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
June 30, 2013State Public Notification received1 linked violation
June 30, 2013State Public Notification received1 linked violation
June 30, 2013State Compliance achieved1 linked violation
May 2, 2013State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 18, 2013State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 18, 2013State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
March 8, 2013State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 30, 2013State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 30, 2013State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
November 1, 2012State Compliance achieved1 linked violation
November 1, 2012State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
November 1, 2012State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
October 23, 2012State Intentional no-action1 linked violation
October 23, 2012State Violation/Reminder Notice1 linked violation
October 23, 2012State Formal Notice of Violation issued1 linked violation
October 10, 2012State Compliance achievedgeneral compliance action — not tied to a specific violation on record
October 10, 2012State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 31, 2012State Formal Notice of Violation issued1 linked violation
July 27, 2012State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
July 27, 2012State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 24, 2012State Compliance achieved1 linked violation
June 22, 2012State Formal Notice of Violation issued1 linked violation
June 22, 2012State Public Notification requested1 linked violation
June 21, 2012State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
June 21, 2012State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
June 20, 2012State Violation/Reminder Notice1 linked violation
April 19, 2012State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 23, 2012State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
January 23, 2012State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 16, 2011State Compliance achieved1 linked violation
March 6, 2001State Compliance achieved5 linked violations
February 6, 2001State Public Notification received3 linked violations
June 17, 1996State Compliance achieved3 linked violations
June 14, 1996State Compliance achieved10 linked violations
June 12, 1996State Compliance achieved2 linked violations
April 18, 1993State Compliance achieved1 linked violation
April 18, 1993State Compliance achieved3 linked violations
April 5, 1993State Public Notification requested1 linked violation
November 8, 1991State Public Notification received3 linked violations
November 8, 1991State Public Notification received1 linked violation
November 1, 1991State Public Notification requested2 linked violations
October 30, 1991State Public Notification requested2 linked violations

Common questions

Is TWIN KNOLLS FOURTH/FIFTH ADDITION required to publish a Consumer Confidence Report?: Yes. TWIN KNOLLS FOURTH/FIFTH ADDITION 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 TWIN KNOLLS FOURTH/FIFTH ADDITION’s next Consumer Confidence Report due?: TWIN KNOLLS FOURTH/FIFTH ADDITION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does TWIN KNOLLS FOURTH/FIFTH ADDITION have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for TWIN KNOLLS FOURTH/FIFTH ADDITION 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

TWIN KNOLLS FOURTH/FIFTH ADDITION

319-310-3227

CEDAR RAPIDS, IA 52408