MALLARD, IA · Palo Alto County

MALLARD 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): IA7450019
System type: Community Water System
Population served: 257
Service connections: 163
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2024 – March 31, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2022 – June 30, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2021 – December 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2021 – June 30, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2021 – March 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2020 – June 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2020 – March 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2019 – December 31, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2019 – September 30, 2019
Archived
Monitoring, Regular
—
Arsenic
July 1, 2019 – September 30, 2019
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 2017 – September 30, 2018
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2016 – July 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2016 – July 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2012 – March 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1985 – June 30, 1988
Resolved

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
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2022 – June 30, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2021 – June 30, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2019 – September 30, 2019	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2017 – September 30, 2018	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Archived
July 1, 2016 – July 31, 2016	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2016 – July 31, 2016	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2012 – March 31, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2011 – December 31, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Nitrate	—	Resolved

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

Enforcement actions

January 29, 2025State Compliance achieved2 linked violations
January 29, 2025State Compliance achieved2 linked violations
January 29, 2025State Compliance achieved2 linked violations
January 29, 2025State Compliance achieved2 linked violations
November 14, 2024State Public Notification received2 linked violations
October 15, 2024State Formal Notice of Violation issued2 linked violations
July 15, 2024State Formal Notice of Violation issued2 linked violations
May 17, 2024State Formal Notice of Violation issued1 linked violation
April 24, 2024State Formal Notice of Violation issued2 linked violations
February 7, 2024State Public Notification received2 linked violations
January 30, 2024State Public Notification requested2 linked violations
October 12, 2023State Public Notification received1 linked violation
October 11, 2023State Administrative/Compliance Order without penalty issued2 linked violations
October 11, 2023State Administrative/Compliance Order without penalty issued2 linked violations
October 11, 2023State Administrative/Compliance Order without penalty issued2 linked violations
October 11, 2023State Administrative/Compliance Order without penalty issued2 linked violations
October 11, 2023State Administrative/Compliance Order without penalty issued3 linked violations
May 15, 2023State Compliance achieved2 linked violations
May 15, 2023State Compliance achieved3 linked violations
May 15, 2023State Compliance achieved3 linked violations
May 15, 2023State Compliance achieved2 linked violations
December 20, 2022State Administrative/Compliance Order without penalty issued4 linked violations
December 20, 2022State Administrative/Compliance Order without penalty issued2 linked violations
December 20, 2022State Administrative/Compliance Order without penalty issued3 linked violations
October 18, 2022State Public Notification requested2 linked violations
May 2, 2022State Public Notification requested2 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued5 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued3 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued3 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued2 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued2 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued2 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued2 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued2 linked violations
March 28, 2022State Administrative/Compliance Order without penalty issued10 linked violations
February 18, 2022State Formal Notice of Violation issued5 linked violations
January 10, 2022State Public Notification received1 linked violation
December 13, 2021State Administrative/Compliance Order without penalty issued1 linked violation
December 13, 2021State Administrative/Compliance Order without penalty issued3 linked violations
December 13, 2021State Administrative/Compliance Order without penalty issued2 linked violations
December 13, 2021State Administrative/Compliance Order without penalty issued2 linked violations
December 13, 2021State Administrative/Compliance Order without penalty issued2 linked violations
December 13, 2021State Administrative/Compliance Order without penalty issued1 linked violation
December 13, 2021State Administrative/Compliance Order without penalty issued1 linked violation
December 13, 2021State Administrative/Compliance Order without penalty issued1 linked violation
December 13, 2021State Administrative/Compliance Order without penalty issued1 linked violation
December 13, 2021State Administrative/Compliance Order without penalty issued2 linked violations
December 13, 2021State Administrative/Compliance Order without penalty issued1 linked violation
December 13, 2021State Administrative/Compliance Order without penalty issued1 linked violation
October 6, 2021State Public Notification received1 linked violation
October 5, 2021State Formal Notice of Violation issued1 linked violation
October 5, 2021State Public Notification requested1 linked violation
July 21, 2021State Public Notification received1 linked violation
June 28, 2021State Public Notification requested1 linked violation
June 28, 2021State Formal Notice of Violation issued1 linked violation
May 10, 2021State Public Notification received1 linked violation
April 9, 2021State Public Notification requested1 linked violation
April 9, 2021State Formal Notice of Violation issued1 linked violation
January 5, 2021State Public Notification received1 linked violation
January 5, 2021State Public Notification received1 linked violation
December 16, 2020State Public Notification requested1 linked violation
December 16, 2020State Formal Notice of Violation issued1 linked violation
September 28, 2020State Public Notification requested1 linked violation
September 28, 2020State Formal Notice of Violation issued1 linked violation
July 9, 2020State Public Notification received1 linked violation
June 8, 2020State Public Notification requested1 linked violation
June 8, 2020State Formal Notice of Violation issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued2 linked violations
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued1 linked violation
June 2, 2020State Administrative/Compliance Order without penalty issued2 linked violations
March 4, 2020State Public Notification received1 linked violation
February 10, 2020State Formal Notice of Violation issued1 linked violation
February 10, 2020State Public Notification requested1 linked violation
January 14, 2020State Public Notification received2 linked violations
January 14, 2020State Public Notification received1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued2 linked violations
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued1 linked violation
December 19, 2019State Administrative/Compliance Order without penalty issued2 linked violations
December 13, 2019State Public Notification requested1 linked violation
December 13, 2019State Formal Notice of Violation issued1 linked violation
December 12, 2019State Compliance achieved2 linked violations
November 21, 2019State Formal Notice of Violation issued2 linked violations
May 7, 2019State Public Notification received2 linked violations
April 8, 2019State Public Notification requested2 linked violations
August 13, 2018State Formal Notice of Violation issued8 linked violations
July 17, 2017State Public Notification received24 linked violations
October 3, 2016State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
October 3, 2016State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 3, 2016State Public Notification requested6 linked violations
October 3, 2016State Public Notification requested2 linked violations
October 3, 2016State Formal Notice of Violation issued1 linked violation
October 3, 2016State Formal Notice of Violation issued3 linked violations
August 3, 2016State Compliance achieved7 linked violations
May 23, 2012State Compliance achieved1 linked violation
May 23, 2012State Compliance achieved2 linked violations
April 4, 2012State Formal Notice of Violation issued2 linked violations
April 4, 2012State Public Notification requested6 linked violations
December 7, 2011State Public Notification received2 linked violations
August 31, 1988State Formal Notice of Violation issued1 linked violation
August 31, 1988State Public Notification requested1 linked violation
August 18, 1988State Compliance achieved1 linked violation
March 1, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Contact

MALLARD WATER SUPPLY

712-425-3529

MALLARD, IA 50562