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TIGARD, CITY OF

Oregon — Community Water System — PWSID: OR4100878

System Information

PWSIDOR4100878
System NameTIGARD, CITY OF
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CityTIGARD
ZIP Code97223
Address8777 SW BURNHAM ST
OrganizationTIGARD, CITY OF
Phone503-718-2690

Population & Service

Population Served62,500
Service Connections20,500

Drinking Water Violations (13)

This water system has 13 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
Jan 1, 2025 Mar 31, 2025 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2020 Sep 30, 2020 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2020 Sep 30, 2020 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2012 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2012 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2012 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2012 Total Coliform Rule
Jan 1, 2005 Dec 31, 2007 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2007 Arsenic Rule
Jan 1, 2002 Dec 31, 2004 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2004 Arsenic Rule
Jan 1, 2002 Dec 31, 2004 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2004 Arsenic Rule
Dec 1, 1994 Dec 31, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 1994 Total Coliform Rule
Jun 1, 1993 Jun 30, 1993 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 1993 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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