LITTLE SIOUX, IA · Harrison County

LITTLE SIOUX WATER DEPARTMENT Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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): IA4333089
System type: Community Water System
Population served: 150
Service connections: 71
Ownership: local government
Water source: groundwater (wells)

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
October 1, 2024 – January 29, 2025
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
August 1, 2024 – August 31, 2024
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 20, 2023
Unaddressed
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
April 1, 2015 – June 30, 2015
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 2006 – September 30, 2006
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1999 – December 31, 1999
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1993 – August 31, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1991 – June 30, 1991
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1985 – June 30, 1988
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2024 – January 29, 2025	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
August 1, 2024 – August 31, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
February 20, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 2006 – September 30, 2006	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 1999 – December 31, 1999	Monitoring, Regular	Nitrate	—	Resolved
August 1, 1993 – August 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 1991 – June 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Nitrate	—	Resolved

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

Enforcement actions

August 26, 2025State Compliance achieved1 linked violation
August 26, 2025State Compliance achieved1 linked violation
June 30, 2025State Public Notification received1 linked violation
June 30, 2025State Public Notification received1 linked violation
January 29, 2025State Compliance achieved1 linked violation
January 27, 2025State Formal Notice of Violation issued1 linked violation
October 18, 2024State Formal Notice of Violation issued1 linked violation
October 18, 2024State Public Notification requested1 linked violation
October 18, 2024State Formal Notice of Violation issued1 linked violation
October 18, 2024State Formal Notice of Violation issued1 linked violation
October 18, 2024State Public Notification requested1 linked violation
October 18, 2024State Public Notification requested1 linked violation
April 19, 2023State Violation/Reminder Notice1 linked violation
April 19, 2023State Formal Notice of Violation issued1 linked violation
April 19, 2023State Intentional no-action1 linked violation
December 18, 2022State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 16, 2022State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
February 16, 2022State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
August 27, 2020State Compliance achieved1 linked violation
August 27, 2020State Compliance achieved1 linked violation
July 16, 2020State Public Notification received3 linked violations
July 16, 2020State Public Notification received1 linked violation
October 23, 2019State Public Notification requested2 linked violations
October 23, 2019State Formal Notice of Violation issued2 linked violations
July 6, 2015State Public Notification received2 linked violations
November 13, 2006State Compliance achieved2 linked violations
October 20, 2006State Formal Notice of Violation issued3 linked violations
April 28, 1995State Public Notification requested4 linked violations
September 15, 1993State Public Notification requested1 linked violation
September 15, 1993State Formal Notice of Violation issued2 linked violations
September 15, 1993State Formal Notice of Violation issued2 linked violations
August 22, 1991State Public Notification requested1 linked violation
August 22, 1991State Public Notification requested1 linked violation
August 22, 1991State Formal Notice of Violation issued2 linked violations
August 22, 1991State Formal Notice of Violation issued1 linked violation
July 2, 1991State Compliance achieved1 linked violation
January 15, 1991State Formal Notice of Violation issued2 linked violations
September 20, 1988State Compliance achieved1 linked violation
September 20, 1988State Compliance achieved1 linked violation
July 19, 1988State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 5, 1988State Compliance achieved1 linked violation
June 28, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
June 2, 1988State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
June 2, 1988State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
June 2, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
June 2, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record

Contact

LITTLE SIOUX WATER DEPARTMENT

712-649-2211

LITTLE SIOUX, IA 51545-3036