MECHANICSVILLE, IA · Cedar County

CLARENCE WATER SUPPLY Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)

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)
April 1, 1999 – April 30, 1999
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1996 – May 31, 1996
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 1990 – April 1, 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
Monitoring, Regular
—
Cadmium
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Arsenic
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
April 1, 1999 – April 30, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 1996 – May 31, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 1990 – April 1, 1991	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	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
April 1, 1988 – March 31, 1991	Monitoring, Regular	Cadmium	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Arsenic	—	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 Public Notification requested3 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 Formal Notice of Violation issued2 linked violations
June 19, 2001State Public Notification requested4 linked violations
May 27, 1999State Public Notification requested3 linked violations
June 24, 1996State Public Notification requested6 linked violations
July 26, 1995State Compliance achieved1 linked violation
July 26, 1995State Compliance achieved3 linked violations
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 Public Notification requested1 linked violation
March 17, 1994State Compliance achieved1 linked violation
March 17, 1994State Compliance achieved3 linked violations
April 1, 1991State Compliance achieved3 linked violations
April 1, 1991State Compliance achieved3 linked violations
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 Unresolved49 linked violations

Contact

CLARENCE WATER SUPPLY

563-452-3625

MECHANICSVILLE, IA 52306