WATERLOO WATER WORKS

Iowa — Community Water System — PWSID: IA0790074

System Information

PWSID	IA0790074
System Name	WATERLOO WATER WORKS
System Type	Community Water System
Water Source	Ground 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	WATERLOO
ZIP Code	50704-0027
Address	ATTN TRAVIS LARSON WATER PROD MANAGER
Organization	WATERLOO WATER WORKS
Phone	319-232-6280

Population & Service

Population Served	69,504
Service Connections	27,430

Drinking Water Violations (64)

This water system has 64 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
Nov 1, 2015	Nov 30, 2015	Nitrate	MCL	Yes	No	10.7 MG/L	10 mg/L	—	Resolved	Nov 30, 2015	Nitrate Rule
Nov 1, 2015	Nov 30, 2015	Nitrate	MCL	Yes	No	10.7 MG/L	10 mg/L	—	Resolved	Nov 30, 2015	Nitrate Rule
Nov 1, 2015	Nov 30, 2015	Nitrate	MCL	Yes	No	10.7 MG/L	10 mg/L	—	Resolved	Nov 30, 2015	Nitrate Rule
Nov 1, 2015	Nov 30, 2015	Nitrate	MCL	Yes	No	10.7 MG/L	10 mg/L	—	Resolved	Nov 30, 2015	Nitrate Rule
Jun 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jul 1, 2008	Lead and Copper Rule
Jun 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jul 1, 2008	Lead and Copper Rule
Jun 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jul 1, 2008	Lead and Copper Rule
Jun 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jul 1, 2008	Lead and Copper Rule
Aug 1, 2005	Aug 31, 2005	Nitrate	MCL	Yes	No	10.6	10 mg/L	—	Resolved	Aug 31, 2005	Nitrate Rule
Aug 1, 2005	Aug 31, 2005	Nitrate	MCL	Yes	No	10.6	10 mg/L	—	Resolved	Aug 31, 2005	Nitrate Rule
Aug 1, 2005	Aug 31, 2005	Nitrate	MCL	Yes	No	10.6	10 mg/L	—	Resolved	Aug 31, 2005	Nitrate Rule
Aug 1, 2005	Aug 31, 2005	Nitrate	MCL	Yes	No	10.6	10 mg/L	—	Resolved	Aug 31, 2005	Nitrate Rule
May 1, 1996	May 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1996	Total Coliform Rule
May 1, 1996	May 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1996	Total Coliform Rule
May 1, 1996	May 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1996	Total Coliform Rule
May 1, 1996	May 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1996	Total Coliform Rule
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jan 1, 1996	Mar 31, 1996	1,1-Dichloroethylene	MR	No	Yes	—	0.007 mg/L	—	Resolved	Mar 31, 1996	Volatile Organic Chemicals
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Jul 1, 1993	Sep 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Apr 1, 1993	Jun 30, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1993	Nitrate Rule
Feb 1, 1992	Feb 29, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Feb 29, 1992	Total Coliform Rule
Feb 1, 1992	Feb 29, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Feb 29, 1992	Total Coliform Rule
Feb 1, 1992	Feb 29, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Feb 29, 1992	Total Coliform Rule
Feb 1, 1992	Feb 29, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Feb 29, 1992	Total Coliform Rule
Jan 1, 1992	Jun 30, 1992	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jun 1, 1992	Lead and Copper Rule
Apr 1, 1988	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	May 23, 1988	Lead and Copper Rule
Jul 1, 1985	Jun 30, 1988	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	May 23, 1988	Inorganic Chemicals
Jul 1, 1985	Jun 30, 1988	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	May 23, 1988	Arsenic 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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