Water Quality Standards (WQS)

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    No. Resolution No. Watershed Pollutant Resolution Name Staff Contact Last Updated New Posting
    Click header row to order by specific field
    1 R24-001 Various Various 2023-2025 Triennial Review
    • Feb 22, 2024
    2 R23-006 Los Angeles River Chloride Site-Specific Objective For Chloride in Los... more
    • Nov 16, 2023
    3 R22-001 Various Amendment to the Water Quality Control Plan... more
    • Apr 3, 2023
    4 R20-001 Various Bacteria Amendments to the Water Quality Control Plan... more
    • Jun 27, 2022
    5 R19-006 Various Various Non-Regulatory Amendments to the Water... more
    • Jun 22, 2021
    6 R20-004 Various Various 2020-2022 Triennial Review
    • Nov 12, 2020
    7 R16-011 Raymond Various Consideration of tentative Basin Plan... more
    • Dec 13, 2018
    8 R16-010 San Gabriel Various Consideration of tentative Basin Plan... more
    • Dec 13, 2018
    9 R18-004 Various Various A Resolution to Prioritize Actions to Adopt... more
    • May 10, 2018
    10 R18-003 Various Various 2017-2019 Triennial Review
    • May 10, 2018
    11 R16-005 Malibu Various Consideration of tentative Basin Plan... more
    • Aug 9, 2017
    12 R16-004 Various N/A Administrative Update for Chapter 4... more
    • Aug 8, 2017
    13 R16-008 Santa Clara Various Consideration of tentative Basin Plan... more
    • May 16, 2017
    14 R15-004 Los Angeles River Metals Basin Plan amendment to adopt site-specific... more
    • Dec 12, 2016
    15 R15-007 Santa Clara River Nutrients Incorporate Stakeholder-Developed... more
    • Aug 17, 2016
    16 R15-011 Various Multiple 2014-2016 Triennial Review
    • Jun 13, 2016
    17 R15-001 Los Angeles Incorporate Stakeholder-Proposed Groundwater... more
    • Apr 11, 2016
    18 R14-009 Various Update Chapter 1 "Introduction", Chapter 5... more
    • Mar 7, 2016
    19 R14-007 Various N/A Incorporation of the Statewide Water Quality... more
    • Jan 7, 2016
    20 R14-003 Malibu N/A Reconsideration of Table 4-zz of Resolution... more
    • Apr 1, 2015
    21 R14-011 Los Angeles Retaining the Current Recreational... more
    • Dec 4, 2014
    22 R12-XXX Los Angeles River Bacteria Re-evaluation of Recreational Uses in the... more
    • Nov 24, 2014
    23 R13-003 Various N/A Non-Regulatory Amendments to the Water... more
    • Oct 13, 2014
    24 R11-011 Regional Multiple Proposed Non-Regulatory Amendment to the... more
    • May 23, 2013
    25 R11-013 Regional Multiple Proposed Non-Regulatory Amendment to the... more
    • Mar 28, 2013
    26 R09-007 Malibu Creek N/A Prohibition for Septic Systems and Onsite... more
    • Apr 24, 2012
    27 R12-001 Regional Multiple 2011-2013 Triennial Review
    • No contact available
    • Mar 5, 2012
    28 R10-005 Regional Bacteria Update of the Bacteria Objectives for... more
    • Dec 5, 2011
    29 R10-001 Regional Multiple 2008-2010 Triennial Review
    • Apr 6, 2010
    30 2007-018 Santa Clara River Multiple Proposed Amendment of Subdivide Reach 4 of... more
    • No contact available
    • Oct 31, 2008
    31 New Regional Metals Developing Water Effect Ratios for Metals in... more
    • Apr 30, 2008
    32 2007-005 Regional Nutrients Site Specific Objectives for Ammonia in the... more
    • Mar 18, 2008
    33 2006-022 Calleguas Creek Metals Developing Water Effects Ratios for Copper... more
    • Aug 23, 2007
    34 2006-021 Regional Multiple Variance Provision for the Groundwater... more
    • Aug 21, 2007
    35 2006-003 Regional Multiple Variance Provision for the Groundwater... more
    • Aug 21, 2007
    36 2005-014 Regional Nutrients Revision of Early Life Stage Provision of... more
    • Apr 5, 2007
    37 2003-XXX Ballona Creek Bacteria Ballona Creek Recreational Use Attainability... more
    • Apr 24, 2006
    38 2004-022 Regional Nutrients Update of Saltwater Ammonia Objectives
    • May 19, 2005
    39 2005-003 Regional Multiple 2004 Triennial Review
    • Mar 3, 2005
    40 2003-010 Regional Bacteria High Flow Suspension of Recreational Uses
    • Nov 2, 2004
    41 2003-015 Santa Clara River Salts Revision of Lower Santa Clara River Chloride... more
    • Aug 4, 2004
    42 2003-001 Regional Multiple Compliance Schedule Policy
    • Feb 18, 2004
    43 2002-022 Regional Bacteria Implementation Provisions For Bacteria... more
    • Jul 15, 2003
    44 2002-011 Regional Nutrients Update of Freshwater Ammonia Objectives
    • Jul 15, 2003
    45 2001-018 Regional Bacteria Update of Bacteria Objectives
    • Dec 3, 2002
    46 1999-013 Regional Multiple Oxnard Forebay Septic System Prohibition
    • Jun 6, 2001
    47 2001-011 Regional Multiple 2001 Triennial Review
    • May 31, 2001
    48 97-02 Regional Chloride Amendment to the Water Quality control Plan... more
    • May 26, 2000
    49 1998-018 Regional Multiple Dedesignation of MUN Use from Portions of... more
    • Feb 9, 2000