SCIO, CITY OF

Oregon — Community Water System — PWSID: OR4100795

System Information

PWSID	OR4100795
System Name	SCIO, 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	SCIO
ZIP Code	97374
Address	PO BOX 37
Organization	SCIO, CITY OF
Phone	503-394-3342

Population & Service

Population Served	900
Service Connections	383

Drinking Water Violations (23)

This water system has 23 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, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 20, 2023	Consumer Confidence Rule
Sep 17, 2022	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	Mar 2, 2023	Revised Total Coliform Rule
Sep 17, 2022	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	Mar 2, 2023	Revised Total Coliform Rule
Sep 17, 2022	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	Mar 2, 2023	Revised Total Coliform Rule
Jan 1, 2003	Dec 31, 2003	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2003	Nitrate Rule
Jan 1, 2003	Dec 31, 2003	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2003	Nitrate Rule
Jan 1, 2003	Dec 31, 2003	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2003	Nitrate Rule
Jan 1, 2002	Dec 31, 2002	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 6, 2002	Nitrate Rule
Dec 1, 2001	Dec 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Jan 1, 2001	Dec 31, 2001	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2001	Nitrate Rule
Oct 1, 2000	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jan 17, 2001	Consumer Confidence Rule
Jan 1, 2000	Dec 31, 2000	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2000	Nitrate Rule
Oct 19, 1999	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 5, 2000	Consumer Confidence Rule
Jan 1, 1996	Dec 31, 1996	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1996	Nitrate Rule
Feb 1, 1995	Feb 28, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Feb 28, 1995	Total Coliform Rule
Jul 1, 1994	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Apr 28, 1995	Lead and Copper Rule
Jan 1, 1994	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 3, 1994	Lead and Copper Rule
Oct 1, 1991	Oct 31, 1991	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1991	Total Coliform Rule
Oct 1, 1991	Oct 31, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Oct 31, 1991	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
—	—		—	No	No	—	—	—	—	—	—
—	—		—	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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