TWIN RIDGE CORP (CITY OF DUBUQUE)

Iowa — Community Water System — PWSID: IA3126302

System Information

PWSID	IA3126302
System Name	TWIN RIDGE CORP (CITY OF DUBUQUE)
System Type	Community Water System
Water Source	Ground Water
Activity Status	Inactive
Owner Type	Private
EPA Region	07
Serves School	No
Wholesaler	No
First Reported	Mar 4, 1980
Last Reported	Mar 26, 2025

Location & Contact

State	Iowa
City	DUBUQUE
ZIP Code	52001
Address	ATTN BOB GREEN
Organization	TWIN RIDGE CORP (CITY OF DUBUQUE)
Phone	563-589-4291

Population & Service

Population Served	215
Service Connections	86

Drinking Water Violations (80)

This water system has 80 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, 2015	Oct 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2015	Total Coliform Rule
Oct 1, 2015	Oct 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2015	Total Coliform Rule
Oct 1, 2015	Oct 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2015	Total Coliform Rule
Oct 1, 2015	Oct 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2015	Total Coliform Rule
Nov 1, 2013	Nov 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 2013	Total Coliform Rule
Nov 1, 2013	Nov 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 2013	Total Coliform Rule
Nov 1, 2013	Nov 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 2013	Total Coliform Rule
Nov 1, 2013	Nov 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 2013	Total Coliform Rule
Oct 1, 2013	Oct 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2013	Total Coliform Rule
Oct 1, 2013	Oct 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2013	Total Coliform Rule
Oct 1, 2013	Oct 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2013	Total Coliform Rule
Oct 1, 2013	Oct 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2013	Total Coliform Rule
Oct 1, 2013	Oct 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2013	Total Coliform Rule
Oct 1, 2011	Sep 30, 2012	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2012	Nitrate Rule
Oct 1, 2011	Sep 30, 2012	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2012	Nitrate Rule
Oct 1, 2011	Sep 30, 2012	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2012	Nitrate Rule
Oct 1, 2011	Sep 30, 2012	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2012	Nitrate Rule
Jul 1, 2011	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Nov 1, 2011	Consumer Confidence Rule
Jul 1, 2011	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Nov 1, 2011	Consumer Confidence Rule
Jul 1, 2011	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Nov 1, 2011	Consumer Confidence Rule
Jul 1, 2011	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Nov 1, 2011	Consumer Confidence Rule
Aug 1, 2003	Aug 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2003	Total Coliform Rule
Aug 1, 2003	Aug 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2003	Total Coliform Rule
Aug 1, 2003	Aug 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2003	Total Coliform Rule
Aug 1, 2003	Aug 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2003	Total Coliform Rule
Aug 1, 2003	Aug 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2003	Total Coliform Rule
Jun 1, 1997	Jun 30, 1997	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1997	Total Coliform Rule
Jun 1, 1997	Jun 30, 1997	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1997	Total Coliform Rule
Jun 1, 1997	Jun 30, 1997	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1997	Total Coliform Rule
Oct 1, 1996	Oct 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1996	Total Coliform Rule
Oct 1, 1996	Oct 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1996	Total Coliform Rule
Oct 1, 1996	Oct 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1996	Total Coliform Rule
Sep 1, 1995	Sep 30, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1995	Total Coliform Rule
Sep 1, 1995	Sep 30, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1995	Total Coliform Rule
Sep 1, 1995	Sep 30, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1995	Total Coliform Rule
Sep 1, 1995	Sep 30, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1995	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
Jul 1, 1986	Jun 30, 1989	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Jun 30, 1989	Inorganic Chemicals
Jul 1, 1986	Jun 30, 1989	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Jun 30, 1989	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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