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GRIZZLY LAKE CSD-DELLEKER

California — Community Water System — PWSID: CA3200104

System Information

PWSIDCA3200104
System NameGRIZZLY LAKE CSD-DELLEKER
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityPORTOLA
ZIP Code96122
Address119 Delleker Road
OrganizationCASTANEDA, SHARON
Phone530-832-5225

Population & Service

Population Served1,314
Service Connections351

Drinking Water Violations (102)

This water system has 102 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
Oct 1, 2024 Oct 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2024 Revised Total Coliform Rule
Oct 1, 2024 Oct 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2024 Revised Total Coliform Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2024 Revised Total Coliform Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2024 Revised Total Coliform Rule
Jul 1, 2023 Sep 30, 2023 Combined Uranium MCL Yes No 24.1 PCI/L 30 ug/L 20 Archived Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Uranium MCL Yes No 24.1 PCI/L 30 ug/L 20 Archived Sep 30, 2023 Radionuclides and Revised Rad Rule
Jan 1, 2022 Mar 31, 2022 Combined Uranium MCL Yes No 24.6 PCI/L 30 ug/L 20 Archived Mar 31, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2022 Mar 31, 2022 Combined Uranium MCL Yes No 24.6 PCI/L 30 ug/L 20 Archived Mar 31, 2022 Radionuclides and Revised Rad Rule
Dec 1, 2021 Dec 31, 2021 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2021 Revised Total Coliform Rule
Dec 1, 2021 Dec 31, 2021 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2021 Revised Total Coliform Rule
Oct 1, 2021 Dec 31, 2021 Combined Uranium MCL Yes No 28.1 PCI/L 30 ug/L 20 Archived Dec 31, 2021 Radionuclides and Revised Rad Rule
Oct 1, 2021 Dec 31, 2021 Combined Uranium MCL Yes No 28.1 PCI/L 30 ug/L 20 Archived Dec 31, 2021 Radionuclides and Revised Rad Rule
Jul 1, 2021 Sep 30, 2021 Combined Uranium MCL Yes No 28.4 PCI/L 30 ug/L 20 Archived Sep 30, 2021 Radionuclides and Revised Rad Rule
Jul 1, 2021 Sep 30, 2021 Combined Uranium MCL Yes No 28.4 PCI/L 30 ug/L 20 Archived Sep 30, 2021 Radionuclides and Revised Rad Rule
Apr 1, 2021 Jun 30, 2021 Combined Uranium MCL Yes No 28.9 PCI/L 30 ug/L 20 Archived Jun 30, 2021 Radionuclides and Revised Rad Rule
Apr 1, 2021 Jun 30, 2021 Combined Uranium MCL Yes No 28.9 PCI/L 30 ug/L 20 Archived Jun 30, 2021 Radionuclides and Revised Rad Rule
Jan 1, 2021 Mar 31, 2021 Combined Uranium MCL Yes No 27.8 PCI/L 30 ug/L 20 Archived Mar 31, 2021 Radionuclides and Revised Rad Rule
Jan 1, 2021 Mar 31, 2021 Combined Uranium MCL Yes No 27.8 PCI/L 30 ug/L 20 Archived Mar 31, 2021 Radionuclides and Revised Rad Rule
Oct 1, 2020 Dec 31, 2020 Combined Uranium MCL Yes No 24.7 PCI/L 30 ug/L 20 Archived Dec 31, 2020 Radionuclides and Revised Rad Rule
Oct 1, 2020 Dec 31, 2020 Combined Uranium MCL Yes No 24.7 PCI/L 30 ug/L 20 Archived Dec 31, 2020 Radionuclides and Revised Rad Rule
Jul 1, 2020 Sep 30, 2020 Combined Uranium MCL Yes No 24.2 PCI/L 30 ug/L 20 Archived Sep 30, 2020 Radionuclides and Revised Rad Rule
Jul 1, 2020 Sep 30, 2020 Combined Uranium MCL Yes No 24.2 PCI/L 30 ug/L 20 Archived Sep 30, 2020 Radionuclides and Revised Rad Rule
Apr 1, 2020 Jun 30, 2020 Combined Uranium MCL Yes No 24.2 PCI/L 30 ug/L 20 Archived Jun 30, 2020 Radionuclides and Revised Rad Rule
Apr 1, 2020 Jun 30, 2020 Combined Uranium MCL Yes No 24.2 PCI/L 30 ug/L 20 Archived Jun 30, 2020 Radionuclides and Revised Rad Rule
Jan 1, 2020 Mar 31, 2020 Combined Uranium MCL Yes No 25.1 PCI/L 30 ug/L 20 Archived Mar 31, 2020 Radionuclides and Revised Rad Rule
Jan 1, 2020 Mar 31, 2020 Combined Uranium MCL Yes No 25.1 PCI/L 30 ug/L 20 Archived Mar 31, 2020 Radionuclides and Revised Rad Rule
Oct 1, 2019 Dec 31, 2019 Combined Uranium MCL Yes No 25.9 PCI/L 30 ug/L 20 Archived Dec 31, 2019 Radionuclides and Revised Rad Rule
Oct 1, 2019 Dec 31, 2019 Combined Uranium MCL Yes No 25.9 PCI/L 30 ug/L 20 Archived Dec 31, 2019 Radionuclides and Revised Rad Rule
Jul 1, 2019 Sep 30, 2019 Combined Uranium MCL Yes No 27 PCI/L 30 ug/L 20 Archived Sep 30, 2019 Radionuclides and Revised Rad Rule
Jul 1, 2019 Sep 30, 2019 Combined Uranium MCL Yes No 27 PCI/L 30 ug/L 20 Archived Sep 30, 2019 Radionuclides and Revised Rad Rule
Apr 1, 2019 Jun 30, 2019 Combined Uranium MCL Yes No 26.2 PCI/L 30 ug/L 20 Archived Jun 30, 2019 Radionuclides and Revised Rad Rule
Apr 1, 2019 Jun 30, 2019 Combined Uranium MCL Yes No 26.2 PCI/L 30 ug/L 20 Archived Jun 30, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2019 Mar 31, 2019 Combined Uranium MCL Yes No 28.2 PCI/L 30 ug/L 20 Archived Mar 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2019 Mar 31, 2019 Combined Uranium MCL Yes No 28.2 PCI/L 30 ug/L 20 Archived Mar 31, 2019 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Uranium MCL Yes No 29.2 PCI/L 30 ug/L 20 Archived Dec 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Uranium MCL Yes No 29.2 PCI/L 30 ug/L 20 Archived Dec 31, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Uranium MCL Yes No 29.4 PCI/L 30 ug/L 20 Archived Sep 30, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Uranium MCL Yes No 29.4 PCI/L 30 ug/L 20 Archived Sep 30, 2017 Radionuclides and Revised Rad Rule
Apr 1, 2017 Jun 30, 2017 Combined Uranium MCL Yes No 29.6 PCI/L 30 ug/L 20 Archived Jun 30, 2017 Radionuclides and Revised Rad Rule
Apr 1, 2017 Jun 30, 2017 Combined Uranium MCL Yes No 29.6 PCI/L 30 ug/L 20 Archived Jun 30, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Uranium MCL Yes No 26 PCI/L 30 ug/L 20 Archived Mar 31, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Uranium MCL Yes No 26 PCI/L 30 ug/L 20 Archived Mar 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Uranium MCL Yes No 22.9 PCI/L 30 ug/L — Archived Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Uranium MCL Yes No 22.9 PCI/L 30 ug/L — Archived Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Uranium MCL Yes No 22.9 PCI/L 30 ug/L — Archived Dec 31, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 Sep 30, 2016 Combined Uranium MCL Yes No 21.3 PCI/L 30 ug/L — Archived Sep 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 Sep 30, 2016 Combined Uranium MCL Yes No 21.3 PCI/L 30 ug/L — Archived Sep 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 Sep 30, 2016 Combined Uranium MCL Yes No 21.3 PCI/L 30 ug/L — Archived Sep 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 Sep 30, 2016 Combined Uranium MCL Yes No 21.3 PCI/L 30 ug/L — Archived Sep 30, 2016 Radionuclides and Revised Rad Rule
Apr 1, 2016 Jun 30, 2016 Combined Uranium MCL Yes No 22.7 PCI/L 30 ug/L 20 Archived Jun 30, 2016 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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