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JOHNSTON RIDGE OBSERVATORY

Washington — Transient Non-Community — PWSID: WA53FS021

System Information

PWSIDWA53FS021
System NameJOHNSTON RIDGE OBSERVATORY
System TypeTransient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeFederal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedJun 5, 1997
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityAmboy
ZIP Code98601
Address42218 NE Yale Bridge Rd.
OrganizationJOHNSTON RIDGE OBSERVATORY
Phone—

Population & Service

Population Served2,506
Service Connections4

Drinking Water Violations (15)

This water system has 15 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, 2022 Jul 31, 2022 Revised Total Coliform Rule MON No No — — — Resolved Jul 31, 2022 Revised Total Coliform Rule
Jul 1, 2022 Jul 31, 2022 Revised Total Coliform Rule MON No No — — — Resolved Jul 31, 2022 Revised Total Coliform Rule
Sep 1, 2021 Sep 30, 2021 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2021 Revised Total Coliform Rule
Sep 1, 2021 Sep 30, 2021 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2021 Revised Total Coliform Rule
Aug 1, 2021 Aug 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2021 Revised Total Coliform Rule
Aug 1, 2021 Aug 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2021 Revised Total Coliform Rule
Jul 1, 2021 Jul 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Jul 31, 2021 Revised Total Coliform Rule
Jul 1, 2021 Jul 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Jul 31, 2021 Revised Total Coliform Rule
Jun 1, 2021 Jun 30, 2021 Revised Total Coliform Rule MON No No — — — Resolved Jun 30, 2021 Revised Total Coliform Rule
Jun 1, 2021 Jun 30, 2021 Revised Total Coliform Rule MON No No — — — Resolved Jun 30, 2021 Revised Total Coliform Rule
May 1, 2021 May 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved May 31, 2021 Revised Total Coliform Rule
May 1, 2021 May 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved May 31, 2021 Revised Total Coliform Rule
Aug 1, 2020 Aug 31, 2020 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2020 Revised Total Coliform Rule
Aug 1, 2020 Aug 31, 2020 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2020 Revised Total Coliform Rule
Sep 1, 2018 Sep 30, 2018 Revised Total Coliform Rule MON No No — — — Resolved Sep 30, 2018 Revised 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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