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MOLALLA, CITY OF

Oregon — Community Water System — PWSID: OR4100534

System Information

PWSIDOR4100534
System NameMOLALLA, 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
CityMOLALLA
ZIP Code97038
AddressPO BOX 248
OrganizationMOLALLA, CITY OF
Phone503-759-0243

Population & Service

Population Served10,298
Service Connections2,938

Drinking Water Violations (38)

This water system has 38 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 Jan 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2025 Revised Total Coliform Rule
Jan 1, 2025 Jan 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2025 Revised Total Coliform Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Apr 1, 2023 Apr 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2023 Revised Total Coliform Rule
Dec 1, 2014 Dec 31, 2014 Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2014 Surface Water Treatment Rule
Dec 1, 2014 Dec 31, 2014 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2014 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2014 Dec 31, 2014 Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2014 Surface Water Treatment Rule
Dec 1, 2014 Dec 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2014 Total Coliform Rule
Oct 1, 2014 Dec 31, 2014 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2014 Dec 31, 2014 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2011 Jul 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2011 Total Coliform Rule
Jul 1, 2011 Jul 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2011 Total Coliform Rule
Jan 1, 2011 — Lead and Copper Rule MR No No — TT — Resolved Nov 6, 2012 Lead and Copper Rule
Jan 1, 2011 — Lead and Copper Rule MR No No — TT — Resolved Nov 6, 2012 Lead and Copper Rule
Jan 1, 2011 — Lead and Copper Rule MR No No — TT — Resolved Nov 6, 2012 Lead and Copper Rule
Dec 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2009 Total Coliform Rule
Dec 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2009 Total Coliform Rule
Dec 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2009 Total Coliform Rule
Jul 1, 2009 Jul 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2009 Total Coliform Rule
Jul 1, 2009 Jul 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2009 Total Coliform Rule
Jul 1, 2009 Jul 31, 2009 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2009 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2009 Jul 31, 2009 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2009 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2009 Jul 31, 2009 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2009 Surface Water Treatment Rule
Jul 1, 2009 Jul 31, 2009 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2009 Surface Water Treatment Rule
Nov 1, 1997 Nov 30, 1997 Surface Water Treatment Rule MR No Yes — — — Resolved Nov 30, 1997 Surface Water Treatment Rule
Feb 1, 1996 Feb 29, 1996 Surface Water Treatment Rule TT Yes No — — — Resolved Feb 29, 1996 Surface Water Treatment Rule
Jan 1, 1996 Dec 31, 1996 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1996 Nitrate Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Jun 1, 1995 Jun 30, 1995 Surface Water Treatment Rule TT Yes No — — — Archived Jun 30, 1995 Surface Water Treatment Rule
Jul 1, 1994 — Lead and Copper Rule MR No No — TT — Resolved Sep 8, 1994 Lead and Copper Rule
Jan 1, 1994 — Lead and Copper Rule MR No No — TT — Resolved Sep 8, 1994 Lead and Copper Rule
Apr 1, 1993 Apr 30, 1993 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1993 Total Coliform Rule
Aug 1, 1992 Aug 31, 1992 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 1992 Total Coliform Rule
Jul 1, 1992 Jul 31, 1992 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 1992 Total Coliform Rule
Aug 1, 1991 Aug 31, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 1991 Total Coliform Rule
Jul 1, 1991 Jul 31, 1991 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1991 Total Coliform 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
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

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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