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CASCADE LOCKS, CITY OF

Oregon — Community Water System — PWSID: OR4100172

System Information

PWSIDOR4100172
System NameCASCADE LOCKS, CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CityCASCADE LOCKS
ZIP Code97014
AddressPO BOX 308
OrganizationCASCADE LOCKS, CITY OF
Phone541-374-8484

Population & Service

Population Served1,398
Service Connections599

Drinking Water Violations (72)

This water system has 72 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
Sep 1, 2025 Sep 30, 2025 Revised Total Coliform Rule MON No Yes — — — Archived Sep 30, 2025 Revised Total Coliform Rule
Aug 1, 2025 Aug 31, 2025 Revised Total Coliform Rule MON No Yes — — — Archived Aug 31, 2025 Revised Total Coliform Rule
Jul 1, 2025 — Consumer Confidence Rule Other No No — — — Unaddressed — Consumer Confidence Rule
Jul 1, 2025 Jul 31, 2025 Revised Total Coliform Rule MON No Yes — — — Archived Jul 31, 2025 Revised Total Coliform Rule
May 1, 2023 May 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved May 31, 2023 Revised Total Coliform Rule
Jan 1, 2023 Dec 31, 2023 COLIPHAGE MR No Yes — — — Archived Dec 31, 2023 Ground Water Rule
Jan 1, 2023 Dec 31, 2023 COLIPHAGE MR No Yes — — — Archived Dec 31, 2023 Ground Water Rule
Nov 1, 2022 Nov 30, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2022 Revised Total Coliform Rule
Oct 1, 2022 Dec 31, 2022 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Jul 1, 2022 Sep 30, 2022 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Sep 30, 2022 Radionuclides and Revised Rad Rule
Jul 1, 2022 — Lead and Copper Rule MR No No — TT — Resolved Oct 4, 2022 Lead and Copper Rule
Jul 1, 2022 Sep 30, 2022 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2022 Radionuclides and Revised Rad Rule
Jul 1, 2022 Sep 30, 2022 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2022 Radionuclides and Revised Rad Rule
Apr 1, 2022 Jun 30, 2022 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Jun 30, 2022 Radionuclides and Revised Rad Rule
Apr 1, 2022 Jun 30, 2022 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2022 Radionuclides and Revised Rad Rule
Apr 1, 2022 Jun 30, 2022 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2022 Jun 30, 2022 Lead and Copper Rule TT Yes No — TT — Resolved Jun 30, 2022 Lead and Copper Rule
Jan 1, 2022 — Lead and Copper Rule MR No No — TT — Resolved Apr 6, 2022 Lead and Copper Rule
Jan 1, 2022 Jun 30, 2022 Lead and Copper Rule TT Yes No — TT — Resolved Jun 30, 2022 Lead and Copper Rule
Jan 1, 2022 Jun 30, 2022 Lead and Copper Rule TT Yes No — TT — Resolved Jun 30, 2022 Lead and Copper Rule
Jan 1, 2022 Jun 30, 2022 Lead and Copper Rule TT Yes No — TT — Resolved Jun 30, 2022 Lead and Copper Rule
Jul 1, 2021 — Lead and Copper Rule MR No No — TT — Resolved Feb 10, 2022 Lead and Copper Rule
Jul 1, 2021 Dec 31, 2021 Lead and Copper Rule TT Yes No — TT — Resolved Dec 31, 2021 Lead and Copper Rule
Jul 1, 2021 Dec 31, 2021 Lead and Copper Rule TT Yes No — TT — Resolved Dec 31, 2021 Lead and Copper Rule
Jul 1, 2021 Dec 31, 2021 Lead and Copper Rule TT Yes No — TT — Resolved Dec 31, 2021 Lead and Copper Rule
Jul 1, 2021 Dec 31, 2021 Lead and Copper Rule TT Yes No — TT — Resolved Dec 31, 2021 Lead and Copper Rule
Jan 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Jan 21, 2020 Lead and Copper Rule
Jul 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Jan 21, 2020 Lead and Copper Rule
Jul 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Jan 21, 2020 Lead and Copper Rule
Dec 1, 2018 Dec 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2018 Revised Total Coliform Rule
Jul 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Sep 14, 2018 Lead and Copper Rule
May 1, 2018 May 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved May 31, 2018 Revised Total Coliform Rule
Jan 1, 2018 Dec 31, 2018 COLIPHAGE MR No Yes — — — Resolved Dec 31, 2018 Ground Water Rule
Jan 1, 2018 Dec 31, 2018 COLIPHAGE MR No Yes — — — Resolved Dec 31, 2018 Ground Water Rule
Nov 1, 2017 Nov 30, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2017 Revised Total Coliform Rule
Jul 1, 2017 — Lead and Copper Rule MR No No — TT — Resolved Aug 24, 2017 Lead and Copper Rule
Dec 1, 2016 Dec 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2016 Revised Total Coliform Rule
Oct 1, 2016 Sep 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Sep 30, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2014 Total Coliform Rule
Jul 1, 2014 Jul 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2014 Total Coliform Rule
Jan 1, 2014 Dec 31, 2014 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2014 Nitrate Rule
Jan 1, 2014 Sep 30, 2014 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Sep 30, 2014 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2013 Radionuclides and Revised Rad Rule
Apr 1, 2013 Jun 30, 2013 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2013 Radionuclides and Revised Rad Rule
Jan 1, 2013 Mar 31, 2013 Combined Uranium MR No Yes — 30 ug/L — Resolved Mar 31, 2013 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Dec 31, 2012 COLIPHAGE MR No Yes — — — Resolved Dec 31, 2012 Ground Water 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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