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LITTLE SIOUX WATER DEPARTMENT

Iowa — Community Water System — PWSID: IA4333089

System Information

PWSIDIA4333089
System NameLITTLE SIOUX WATER DEPARTMENT
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region07
Serves SchoolNo
WholesalerNo
First ReportedFeb 27, 1979
Last ReportedDec 19, 2025

Location & Contact

StateIowa
CityLITTLE SIOUX
ZIP Code51545-3036
AddressATTN WATER SUPT
OrganizationLITTLE SIOUX WATER DEPARTMENT
Phone712-649-2211

Population & Service

Population Served166
Service Connections78

Drinking Water Violations (74)

This water system has 74 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jan 29, 2025 Lead and Copper Rule
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jan 29, 2025 Lead and Copper Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Feb 20, 2023 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Feb 20, 2023 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Feb 20, 2023 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Aug 1, 2019 Aug 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 Arsenic MCL Yes No .013 MG/L 0.010 mg/L — Resolved Jun 30, 2015 Arsenic Rule
Apr 1, 2015 Jun 30, 2015 Arsenic MCL Yes No .013 MG/L 0.010 mg/L — Resolved Jun 30, 2015 Arsenic Rule
Apr 1, 2015 Jun 30, 2015 Arsenic MCL Yes No .013 MG/L 0.010 mg/L — Resolved Jun 30, 2015 Arsenic Rule
Apr 1, 2015 Jun 30, 2015 Arsenic MCL Yes No .013 MG/L 0.010 mg/L — Resolved Jun 30, 2015 Arsenic Rule
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 2006 Volatile Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 2006 Volatile Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 2006 Volatile Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 2006 Volatile Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 2006 Volatile Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 2006 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Jan 1, 1999 Dec 31, 1999 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Jan 1, 1999 Dec 31, 1999 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Feb 1, 1995 Feb 28, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 1995 Total Coliform Rule
Feb 1, 1995 Feb 28, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 1995 Total Coliform Rule
Feb 1, 1995 Feb 28, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 1995 Total Coliform Rule
Aug 1, 1993 Aug 31, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1993 Total Coliform Rule
Aug 1, 1993 Aug 31, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1993 Total Coliform Rule
Aug 1, 1993 Aug 31, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1993 Total Coliform Rule
Aug 1, 1993 Aug 31, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1993 Total Coliform Rule
Aug 1, 1993 Aug 31, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1993 Total Coliform Rule
Aug 1, 1993 Aug 31, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1993 Total Coliform Rule
Jun 1, 1991 Jun 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 1991 Total Coliform Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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