AURORA, CITY OF

Oregon — Community Water System — PWSID: OR4100067

System Information

PWSID	OR4100067
System Name	AURORA, CITY OF
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	10
Serves School	No
Wholesaler	No
First Reported	Mar 12, 1979
Last Reported	Dec 23, 2025

Location & Contact

State	Oregon
City	AURORA
ZIP Code	97002
Address	21420 MAIN ST
Organization	AURORA, CITY OF
Phone	971-930-3597

Population & Service

Population Served	1,133
Service Connections	486

Drinking Water Violations (49)

This water system has 49 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
Jul 1, 2025	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 24, 2025	Consumer Confidence Rule
Jul 1, 2024	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Apr 24, 2025	Consumer Confidence Rule
Jan 1, 2024	Dec 31, 2024	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2024	Ground Water Rule
Oct 1, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jan 31, 2024	Consumer Confidence Rule
Jul 1, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Apr 24, 2025	Consumer Confidence Rule
Jan 1, 2023	Mar 31, 2023	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2023	Arsenic Rule
Jan 1, 2022	Mar 31, 2022	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2022	Arsenic Rule
Oct 1, 2019	Sep 30, 2020	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2020	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2019	Sep 30, 2020	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2020	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015	Dec 31, 2015	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2015	Ground Water Rule
Jan 1, 2015	Dec 31, 2015	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2015	Ground Water Rule
Jan 1, 2015	Dec 31, 2015	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2015	Ground Water Rule
Oct 1, 2014	Sep 30, 2015	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2015	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2014	Sep 30, 2015	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2015	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014	Sep 30, 2014	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2014	Arsenic Rule
Jan 1, 2014	Sep 30, 2014	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2014	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014	Sep 30, 2014	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2014	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2012	Jul 31, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 2012	Total Coliform Rule
Jul 1, 2012	Jul 31, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 2012	Total Coliform Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Jul 1, 2011	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	May 8, 2012	Lead and Copper Rule
Jul 1, 2011	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	May 8, 2012	Lead and Copper Rule
Jan 1, 2009	Mar 31, 2009	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2009	Arsenic Rule
Dec 1, 2008	Dec 31, 2008	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2008	Total Coliform Rule
Oct 1, 2008	Dec 31, 2008	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2008	Arsenic Rule
Jul 1, 2008	Sep 30, 2008	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2008	Arsenic Rule
Jan 1, 2008	Mar 31, 2008	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2008	Arsenic Rule
Jul 1, 2007	Sep 30, 2007	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2007	Arsenic Rule
Apr 1, 2007	Jun 30, 2007	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Jun 30, 2007	Arsenic Rule
Jan 1, 2005	Dec 31, 2005	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	Nitrate Rule
Oct 1, 2003	Oct 31, 2003	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2003	Total Coliform Rule
Oct 19, 2002	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	May 7, 2003	Consumer Confidence Rule
Jul 1, 2002	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Apr 3, 2003	Consumer Confidence Rule
Oct 19, 2001	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	May 7, 2003	Consumer Confidence Rule
Jul 1, 2001	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Apr 3, 2003	Consumer Confidence Rule
Jan 1, 1998	Dec 31, 1998	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1998	Nitrate Rule
Nov 1, 1997	Nov 30, 1997	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 1997	Total Coliform Rule
Mar 1, 1996	Mar 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 1996	Total Coliform Rule
Dec 1, 1994	Dec 31, 1994	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 1994	Total Coliform Rule
Nov 1, 1994	Nov 30, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 1994	Total Coliform Rule
Jun 1, 1976	May 31, 1980	Gross Alpha, Excl. Radon and U	MR	No	No	—	15 pCi/L	—	Archived	May 31, 1980	Radionuclides and Revised Rad Rule
Jun 1, 1976	May 31, 1980	Combined Radium (-226 and -228)	MR	No	No	—	5 pCi/L	—	Archived	May 31, 1980	Radionuclides and Revised Rad 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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