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JEFFERSON, CITY OF

Oregon — Community Water System — PWSID: OR4100408

System Information

PWSIDOR4100408
System NameJEFFERSON, CITY OF
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CityJEFFERSON
ZIP Code97352
AddressPO BOX 83
OrganizationJEFFERSON, CITY OF
Phone541-327-1135

Population & Service

Population Served3,348
Service Connections1,150

Drinking Water Violations (52)

This water system has 52 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
Mar 1, 2025 Mar 31, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2025 Surface Water Treatment Rule
Mar 1, 2025 Mar 31, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2025 Surface Water Treatment Rule
Mar 1, 2025 Mar 31, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2025 Surface Water Treatment Rule
Aug 1, 2021 Aug 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2021 Revised Total Coliform Rule
Jan 1, 2018 Jan 31, 2018 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2018 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2018 Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2018 Surface Water Treatment Rule
May 1, 2012 May 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2012 Total Coliform Rule
May 1, 2012 May 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2012 Total Coliform Rule
Apr 1, 2012 Apr 30, 2012 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2012 Surface Water Treatment Rule
Dec 1, 2008 Dec 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2008 Total Coliform Rule
Jan 1, 2004 Dec 31, 2004 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2004 Arsenic Rule
Jan 1, 2004 Dec 31, 2004 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Nitrate Rule
Jan 1, 2004 Dec 31, 2004 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Jan 31, 2001 Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2001 Surface Water Treatment Rule
Jun 1, 1995 Jun 30, 1995 Surface Water Treatment Rule TT Yes No — — — Resolved Jun 30, 1995 Surface Water Treatment Rule
May 1, 1995 May 31, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 1995 Total Coliform Rule
Dec 1, 1994 Dec 31, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 1994 Total Coliform Rule
Apr 1, 1993 Apr 30, 1993 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1993 Total Coliform Rule
Apr 1, 1992 Apr 30, 1992 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1992 Total Coliform Rule
Apr 1, 1991 Apr 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1991 Total Coliform 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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