SAN JOAQUIN, CITY OF

California — Community Water System — PWSID: CA1010034

System Information

PWSID	CA1010034
System Name	SAN JOAQUIN, CITY OF
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	09
Serves School	No
Wholesaler	No
First Reported	Mar 22, 1979
Last Reported	Mar 20, 2026

Location & Contact

State	California
City	SAN JOAQUIN
ZIP Code	93660
Address	P.O. Box 758
Organization	BULLA, STAN
Phone	559-693-4311

Population & Service

Population Served	4,060
Service Connections	754

Drinking Water Violations (39)

This water system has 39 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Sep 1, 2010	Sep 30, 2010	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2010	—
Sep 1, 2010	Sep 30, 2010	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2010	—
Sep 1, 2010	Sep 30, 2010	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2010	—
Jun 1, 2005	Jun 30, 2005	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2005	—
Jun 1, 2005	Jun 30, 2005	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2005	—
Jan 1, 2005	Dec 31, 2005	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	—
Jan 1, 2005	Dec 31, 2005	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	—
Jul 1, 2004	Jul 31, 2004	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2004	—
Jul 1, 2004	Jul 31, 2004	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2004	—
Mar 1, 2004	Mar 31, 2004	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 2004	—
Mar 1, 2004	Mar 31, 2004	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 2004	—
Jan 1, 2004	Dec 31, 2004	MR	No	Yes	—	0.060 mg/L	—	Resolved	Dec 31, 2004	—
Jan 1, 2004	Dec 31, 2004	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2004	—
Apr 1, 2003	Apr 30, 2003	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 2003	—
Apr 1, 2003	Apr 30, 2003	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 2003	—
Jan 1, 2003	—	MR	No	No	—	TT	—	Resolved	Jun 4, 2004	—
Jan 1, 2003	—	MR	No	No	—	TT	—	Resolved	Jun 4, 2004	—
Jun 1, 2001	Jun 30, 2001	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	—
Jun 1, 2001	Jun 30, 2001	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	—
May 1, 2000	May 31, 2000	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 2000	—
May 1, 2000	May 31, 2000	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 2000	—
Jan 1, 2000	Dec 31, 2000	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2000	—
Jan 1, 2000	Dec 31, 2000	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2000	—
Jan 1, 2000	—	MR	No	No	—	TT	—	Resolved	Jun 4, 2004	—
Jan 1, 2000	—	MR	No	No	—	TT	—	Resolved	Jun 4, 2004	—
Jan 1, 2000	—	MR	No	No	—	TT	—	Resolved	Jun 4, 2004	—
Jun 1, 1998	Jun 30, 1998	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1998	—
Jun 1, 1998	Jun 30, 1998	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1998	—
Sep 1, 1994	Sep 30, 1994	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1994	—
Sep 1, 1994	Sep 30, 1994	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1994	—
Nov 1, 1993	Dec 31, 1993	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 1993	—
Nov 1, 1993	Dec 31, 1993	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 1993	—
Nov 1, 1992	Dec 31, 1992	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 1992	—
Nov 1, 1992	Dec 31, 1992	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 1992	—
Oct 1, 1992	Nov 30, 1992	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 1992	—
Oct 1, 1992	Nov 30, 1992	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 1992	—
Aug 1, 1992	Aug 31, 1992	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 1992	—
Aug 1, 1992	Aug 31, 1992	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 1992	—
Dec 1, 1989	Dec 31, 1989	Other	No	No	—	—	—	Archived	Dec 31, 1989	—

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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