OTTUMWA WATER WORKS

Iowa — Community Water System — PWSID: IA9083012

System Information

PWSID	IA9083012
System Name	OTTUMWA WATER WORKS
System Type	Community Water System
Water Source	Surface Water
Activity Status	Active
Owner Type	Local
EPA Region	07
Serves School	No
Wholesaler	No
First Reported	Feb 27, 1979
Last Reported	Dec 19, 2025

Location & Contact

State	Iowa
City	OTTUMWA
ZIP Code	52501
Address	ATTN DEXTER HILL
Organization	OTTUMWA WATER WORKS
Phone	641-684-4606

Population & Service

Population Served	25,529
Service Connections	9,800

Drinking Water Violations (75)

This water system has 75 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
Jan 1, 2024	Jan 31, 2024	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jan 31, 2024	Nitrate Rule
Jan 1, 2024	Jan 31, 2024	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jan 31, 2024	Nitrate Rule
Jan 1, 2024	Jan 31, 2024	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jan 31, 2024	Nitrate Rule
Jan 1, 2024	Jan 31, 2024	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jan 31, 2024	Nitrate Rule
Jan 1, 2024	Jan 31, 2024	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Jan 31, 2024	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024	Jan 31, 2024	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Jan 31, 2024	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024	Jan 31, 2024	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Jan 31, 2024	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024	Jan 31, 2024	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Jan 31, 2024	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022	Apr 30, 2022	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Apr 30, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Sep 16, 2016	Consumer Confidence Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Sep 16, 2016	Consumer Confidence Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Sep 16, 2016	Consumer Confidence Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Sep 16, 2016	Consumer Confidence Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Sep 16, 2016	Consumer Confidence Rule
Jul 1, 2013	Sep 30, 2013	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Sep 30, 2013	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013	Sep 30, 2013	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Sep 30, 2013	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013	Sep 30, 2013	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Sep 30, 2013	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013	Sep 30, 2013	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Sep 30, 2013	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013	Sep 30, 2013	CARBON, TOTAL	MR	No	Yes	—	TT	—	Resolved	Sep 30, 2013	Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2009	Mar 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 2009	Total Coliform Rule
Mar 1, 2009	Mar 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 2009	Total Coliform Rule
Mar 1, 2009	Mar 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 2009	Total Coliform Rule
Mar 1, 2009	Mar 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 2009	Total Coliform Rule
Mar 1, 2009	Mar 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 2009	Total Coliform Rule
Jan 1, 2009	Jan 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2009	Total Coliform Rule
Jan 1, 2009	Jan 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2009	Total Coliform Rule
Jan 1, 2009	Jan 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2009	Total Coliform Rule
Jan 1, 2009	Jan 31, 2009	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2009	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Jan 1, 2003	Jan 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 2003	Total Coliform Rule
Apr 1, 1990	Mar 31, 1991	Selenium	MR	No	Yes	—	0.05 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1990	Mar 31, 1991	Selenium	MR	No	Yes	—	0.05 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1990	Mar 31, 1991	Chromium	MR	No	Yes	—	0.1 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1990	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1990	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1990	Mar 31, 1991	Cadmium	MR	No	Yes	—	0.005 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1990	Mar 31, 1991	Cadmium	MR	No	Yes	—	0.005 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals

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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