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

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

CLARENCE 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.

MECHANICSVILLE, IA · Cedar County

CLARENCE WATER SUPPLY Water System

Consumer Confidence Report status

CLARENCE 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 CLARENCE 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): IA1630028
System type: Community Water System
Population served: 1,039
Service connections: 502
Ownership: local government
Water source: groundwater (wells)

CLARENCE WATER SUPPLY is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 1,039 people from groundwater.

As of August 1, 2026, its federal record holds 8 entries between 1988 and 2017, all of which EPA lists as closed. Nothing has been added since 2017.

All 8 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 inorganic chemicals and the Total Coliform Rules.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Nitrate
July 1, 2017 – June 30, 2018
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2001 – May 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 1998 – January 31, 1998
Resolved
Monitoring, Regular
—
Arsenic
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Chromium
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Mercury
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Selenium
April 1, 1988 – March 31, 1991
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 1, 2017 – December 31, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2017 – June 30, 2018	Monitoring, Regular	Nitrate	—	Resolved
May 1, 2001 – May 31, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1998 – January 31, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Arsenic	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Chromium	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Mercury	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Selenium	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

November 1, 2018State Public Notification received1 linked violation
July 25, 2018State Public Notification requested1 linked violation
July 25, 2018State Compliance achieved1 linked violation
July 25, 2018State Formal Notice of Violation issued1 linked violation
February 8, 2018State Public Notification received1 linked violation
January 17, 2018State Public Notification requested1 linked violation
January 17, 2018State Formal Notice of Violation issued1 linked violation
August 21, 2006State Public Notification received1 linked violation
July 27, 2001State Formal Notice of Violation issued2 linked violations
July 27, 2001State Formal Notice of Violation issued2 linked violations
July 27, 2001State Formal Notice of Violation issued1 linked violation
July 27, 2001State Public Notification requested1 linked violation
July 27, 2001State Public Notification requested1 linked violation
June 25, 2001State Compliance achieved3 linked violations
June 19, 2001State Formal Notice of Violation issued4 linked violations
June 19, 2001State Public Notification requested4 linked violations
June 19, 2001State Public Notification requested4 linked violations
July 26, 1995State Compliance achieved1 linked violation
July 26, 1995State Compliance achieved3 linked violations
January 12, 1995State Formal Notice of Violation issued1 linked violation
January 3, 1995State Formal Notice of Violation issued1 linked violation
January 3, 1995State Public Notification requested1 linked violation
October 10, 1994State Public Notification received1 linked violation
September 20, 1994State Formal Notice of Violation issued3 linked violations
September 20, 1994State Public Notification requested1 linked violation
March 17, 1994State Compliance achieved1 linked violation
April 1, 1991State Compliance achieved3 linked violations
April 1, 1991State Compliance achieved1 linked violation
April 1, 1991State Compliance achieved1 linked violation
April 1, 1991State Compliance achieved9 linked violations
April 1, 1991State Compliance achieved1 linked violation
September 30, 1984Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record
January 19, 1982State Unresolved50 linked violations

Common questions

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

CLARENCE WATER SUPPLY

563-452-3625

MECHANICSVILLE, IA 52306