CITY OF PORTOLA

California — Community Water System — PWSID: CA3210003

System Information

PWSID	CA3210003
System Name	CITY OF PORTOLA
System Type	Community Water System
Water Source	Surface Water Purchased
Activity Status	Active
Owner Type	Local
EPA Region	09
Serves School	No
Wholesaler	No
First Reported	Mar 22, 1979
Last Reported	Nov 17, 2025

Location & Contact

State	California
City	PORTOLA
ZIP Code	96122
Address	P.O. BOX 1225
Organization	ROBERTS, TODD
Phone	530-832-6809

Population & Service

Population Served	2,100
Service Connections	1,154

Drinking Water Violations (44)

This water system has 44 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, 2013	Sep 30, 2013	Arsenic	MCL	Yes	No	.015 MG/L	0.010 mg/L	—	Resolved	Sep 30, 2013	Arsenic Rule
Jul 1, 2013	Sep 30, 2013	Arsenic	MCL	Yes	No	.015 MG/L	0.010 mg/L	—	Resolved	Sep 30, 2013	Arsenic Rule
Jul 1, 2013	Sep 30, 2013	Arsenic	MCL	Yes	No	.015 MG/L	0.010 mg/L	—	Resolved	Sep 30, 2013	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MCL	Yes	No	.022 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MCL	Yes	No	.022 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MCL	Yes	No	.022 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Apr 1, 2010	Jun 30, 2010	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2010	Arsenic Rule
Apr 1, 2010	Jun 30, 2010	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2010	Arsenic Rule
Apr 1, 2010	Jun 30, 2010	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2010	Arsenic Rule
Jan 1, 2010	Mar 31, 2010	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2010	Arsenic Rule
Jan 1, 2010	Mar 31, 2010	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2010	Arsenic Rule
Jan 1, 2010	Mar 31, 2010	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2010	Arsenic Rule
Oct 1, 2009	Dec 31, 2009	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2009	Arsenic Rule
Oct 1, 2009	Dec 31, 2009	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2009	Arsenic Rule
Oct 1, 2009	Dec 31, 2009	Arsenic	MCL	Yes	No	.018 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2009	Arsenic Rule
Jul 1, 2009	Sep 30, 2009	Arsenic	MCL	Yes	No	.019 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2009	Arsenic Rule
Jul 1, 2009	Sep 30, 2009	Arsenic	MCL	Yes	No	.019 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2009	Arsenic Rule
Jul 1, 2009	Sep 30, 2009	Arsenic	MCL	Yes	No	.019 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2009	Arsenic Rule
Apr 1, 2009	Jun 30, 2009	Arsenic	MCL	Yes	No	.019 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2009	Arsenic Rule
Apr 1, 2009	Jun 30, 2009	Arsenic	MCL	Yes	No	.019 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2009	Arsenic Rule
Apr 1, 2009	Jun 30, 2009	Arsenic	MCL	Yes	No	.019 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2009	Arsenic Rule
Jan 1, 2009	Mar 31, 2009	Arsenic	MCL	Yes	No	.0173 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2009	Arsenic Rule
Jan 1, 2009	Mar 31, 2009	Arsenic	MCL	Yes	No	.0173 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2009	Arsenic Rule
Jan 1, 2009	Mar 31, 2009	Arsenic	MCL	Yes	No	.0173 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2009	Arsenic Rule
Oct 1, 2008	Dec 31, 2008	Arsenic	MCL	Yes	No	.0175 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2008	Arsenic Rule
Oct 1, 2008	Dec 31, 2008	Arsenic	MCL	Yes	No	.0175 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2008	Arsenic Rule
Oct 1, 2008	Dec 31, 2008	Arsenic	MCL	Yes	No	.0175 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2008	Arsenic Rule
Jul 1, 2008	Sep 30, 2008	Arsenic	MCL	Yes	No	.017 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2008	Arsenic Rule
Jul 1, 2008	Sep 30, 2008	Arsenic	MCL	Yes	No	.017 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2008	Arsenic Rule
Apr 1, 2008	Jun 30, 2008	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2008	Arsenic Rule
Apr 1, 2008	Jun 30, 2008	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2008	Arsenic Rule
Jan 1, 2008	Mar 31, 2008	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2008	Arsenic Rule
Jan 1, 2008	Mar 31, 2008	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2008	Arsenic Rule
Oct 1, 2007	Dec 31, 2007	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2007	Arsenic Rule
Oct 1, 2007	Dec 31, 2007	Arsenic	MCL	Yes	No	.016 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2007	Arsenic Rule
Jul 1, 2007	Sep 30, 2007	Arsenic	MCL	Yes	No	.013 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2007	Arsenic Rule
Jul 1, 2007	Sep 30, 2007	Arsenic	MCL	Yes	No	.013 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2007	Arsenic Rule
Sep 30, 1980	Oct 29, 1980		Other	No	No	—	—	—	Archived	Oct 29, 1980	Miscellaneous Other Rules

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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