LEON, IA · Decatur County

LEON 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): IA2742076
System type: Community Water System
Population served: 1,830
Service connections: 825
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2023 – July 31, 2023
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2022 – August 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
TTHM
February 1, 2022 – February 28, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
February 1, 2022 – February 28, 2022
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2018 – September 4, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2016 – December 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2016 – September 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2016 – September 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2016 – June 30, 2016
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 1985 – March 31, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
October 1, 1984 – September 30, 1985
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1984 – September 30, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Gross Alpha, Excl. Radon and U
October 1, 1983 – September 30, 1984
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
November 9, 1979 – November 8, 1980
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
July 1, 2023 – July 31, 2023	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2022 – August 31, 2022	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 2022 – February 28, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
February 1, 2022 – February 28, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2018 – September 4, 2018	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 1985 – March 31, 1989	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 1984 – September 30, 1985	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
October 1, 1984 – September 30, 1985	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
October 1, 1983 – September 30, 1984	Maximum Contaminant Level Violation, Single Sample	Gross Alpha, Excl. Radon and U	Health-based	Archived
November 9, 1979 – November 8, 1980	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived

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

Enforcement actions

August 22, 2025State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
March 6, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
March 6, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
March 6, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
March 6, 2025State Public Notification received1 linked violation
March 6, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
March 6, 2025State Public Notification received1 linked violation
February 18, 2025State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
February 18, 2025State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
February 13, 2025State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
February 13, 2025State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification received2 linked violations
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 17, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
November 14, 2024State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
November 14, 2024State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
September 12, 2023State Public Notification received1 linked violation
September 1, 2023State Compliance achieved2 linked violations
August 17, 2023State Formal Notice of Violation issued1 linked violation
May 3, 2023State Public Notification received1 linked violation
November 10, 2022State Compliance achieved1 linked violation
November 8, 2022State Public Notification received1 linked violation
October 11, 2022State Formal Notice of Violation issued1 linked violation
October 10, 2022State Compliance achieved1 linked violation
August 31, 2022State Public Notification received1 linked violation
August 24, 2022State Formal Notice of Violation issued1 linked violation
May 3, 2022State Compliance achieved1 linked violation
May 3, 2022State Compliance achieved2 linked violations
April 20, 2022State Formal Notice of Violation issued1 linked violation
April 20, 2022State Public Notification requested1 linked violation
April 20, 2022State Formal Notice of Violation issued1 linked violation
April 20, 2022State Formal Notice of Violation issued1 linked violation
April 20, 2022State Public Notification requested1 linked violation
April 20, 2022State Formal Notice of Violation issued2 linked violations
April 20, 2022State Public Notification requested1 linked violation
November 15, 2018State Public Notification received1 linked violation
September 4, 2018State Compliance achieved1 linked violation
September 1, 2018State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 21, 2018State Public Notification requested2 linked violations
July 26, 2018State Formal Notice of Violation issued1 linked violation
May 8, 2017State Compliance achieved5 linked violations
May 8, 2017State Compliance achieved1 linked violation
October 17, 2016State Public Notification received1 linked violation
September 16, 2016State Public Notification requested2 linked violations
September 16, 2016State Formal Notice of Violation issued3 linked violations
September 12, 2016State Public Notification received2 linked violations
August 10, 2016State Compliance achieved12 linked violations
August 9, 2016State Public Notification requested2 linked violations
June 5, 1996State Compliance achieved4 linked violations
October 23, 1995State Compliance achieved2 linked violations
June 12, 1991State Public Notification received2 linked violations
May 6, 1991State Compliance achieved1 linked violation
May 6, 1991State Compliance achieved1 linked violation
June 21, 1989State Intentional no-action1 linked violation
September 30, 1984Federal issued Formal Notice of Violation5 linked violations
February 16, 1982State Unresolved1 linked violation

Contact

LEON WATER SUPPLY

641-446-6221

LEON, IA 50144