SHERWOOD, CITY OF

Oregon — Community Water System — PWSID: OR4100816

System Information

PWSID	OR4100816
System Name	SHERWOOD, CITY OF
System Type	Community Water System
Water Source	Surface Water Purchased
Activity Status	Active
Owner Type	Local
EPA Region	10
Serves School	No
Wholesaler	No
First Reported	Mar 12, 1979
Last Reported	Mar 25, 2026

Location & Contact

State	Oregon
City	SHERWOOD
ZIP Code	97140
Address	15527 SW WILLAMETTE ST
Organization	SHERWOOD, CITY OF
Phone	503-925-2319

Population & Service

Population Served	19,885
Service Connections	5,591

Drinking Water Violations (41)

This water system has 41 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
Oct 1, 2025	—	Other	No	No	—	—	—	Resolved	Oct 10, 2025	—
Jul 1, 2025	—	Other	No	No	—	—	—	Resolved	Oct 10, 2025	—
Jul 1, 2021	Jul 31, 2021	MON	No	No	—	—	—	Resolved	Jul 31, 2021	—
Apr 1, 2015	Jun 30, 2015	MR	No	Yes	—	0.060 mg/L	—	Resolved	Jun 30, 2015	—
Apr 1, 2015	Jun 30, 2015	MR	No	Yes	—	0.080 mg/L	—	Resolved	Jun 30, 2015	—
Oct 1, 2014	Dec 31, 2014	MR	No	Yes	—	0.060 mg/L	—	Resolved	Dec 31, 2014	—
Oct 1, 2014	Dec 31, 2014	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2014	—
Jan 1, 2011	Dec 31, 2011	MR	No	Yes	—	0.0002 mg/L	—	Resolved	Dec 31, 2011	—
Jan 1, 2011	Dec 31, 2011	MR	No	Yes	—	0.0002 mg/L	—	Resolved	Dec 31, 2011	—
Oct 1, 2009	Dec 31, 2009	MR	No	Yes	—	0.02 mg/L	—	Resolved	Dec 31, 2009	—
Oct 1, 2009	Dec 31, 2009	MR	No	Yes	—	0.02 mg/L	—	Resolved	Dec 31, 2009	—
Jul 1, 2009	Sep 30, 2009	MR	No	Yes	—	0.02 mg/L	—	Resolved	Sep 30, 2009	—
Jul 1, 2009	Sep 30, 2009	MR	No	Yes	—	0.02 mg/L	—	Resolved	Sep 30, 2009	—
Mar 1, 2000	Mar 31, 2000	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2000	—
Mar 1, 1999	Mar 31, 1999	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 1999	—
Jan 1, 1999	Dec 31, 1999	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1999	—
Jan 1, 1999	Dec 31, 1999	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1999	—
Jan 1, 1998	Dec 31, 1998	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1998	—
Jan 1, 1998	Dec 31, 1998	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1998	—
Aug 1, 1997	Aug 31, 1997	MR	No	Yes	—	5% of samples	—	Archived	Aug 31, 1997	—
Sep 1, 1996	Sep 30, 1996	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1996	—
Jul 1, 1996	Jul 31, 1996	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 1996	—
Dec 1, 1995	Dec 31, 1995	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 1995	—
Nov 1, 1995	Nov 30, 1995	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 1995	—
Jan 1, 1995	Jan 31, 1995	MR	No	No	—	5% of samples	—	Resolved	Jan 31, 1995	—
Jul 1, 1994	—	MR	No	No	—	TT	—	Resolved	Sep 13, 1993	—
Jan 1, 1994	—	MR	No	No	—	TT	—	Resolved	Sep 19, 1994	—
Jan 1, 1994	—	MR	No	No	—	TT	—	Resolved	Sep 19, 1994	—
Jan 1, 1994	—	MR	No	No	—	TT	—	Resolved	Sep 19, 1994	—
May 1, 1993	May 31, 1993	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 1993	—
Apr 1, 1993	Apr 30, 1993	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 1993	—
Feb 1, 1993	Feb 28, 1993	MCL	Yes	No	—	5% of samples	—	Resolved	Feb 28, 1993	—
Oct 1, 1992	Oct 31, 1992	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1992	—
Sep 1, 1992	Sep 30, 1992	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1992	—
Jan 1, 1992	Jan 31, 1992	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 1992	—
Oct 1, 1991	Oct 31, 1991	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1991	—
Oct 1, 1991	Oct 31, 1991	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 1991	—
Jul 1, 1991	Jul 31, 1991	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1991	—
Jun 1, 1976	May 31, 1980	MR	No	No	—	5 pCi/L	—	Archived	May 31, 1980	—
Jun 1, 1976	May 31, 1980	MR	No	No	—	15 pCi/L	—	Archived	May 31, 1980	—
—	—	—	No	No	—	—	—	—	—	—

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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