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Storm Water - Municipal Permits

The Los Angeles Water Board regulates discharges from medium and large municipal separate storm sewer systems (MS4s) through the Los Angeles County, Long Beach, and Ventura County MS4 Permits. These permits are issued under the National Pollutant Discharge Elimination System (NPDES) Program

Posted Date Comment Due Date
    Permittee
    Document
 Associated Permit
    Staff
    Notice
8/10/2018 9/10/2018 City of La Mirada LA County MS4 Permit
8/6/2018 9/5/2018 Beach Cities Watershed Management Group LA County MS4 Permit
7/30/2018 8/29/2018 North Santa Monica Bay Coastal Watershed Management Group LA County MS4 Permit
6/15/2018 7/16/2018 Various LA County MS4 Permittees, City of Long Beach LA County MS4 Permit
6/15/2018 7/16/2018 City of Alhambra LA County MS4 Permit
6/15/2018 7/16/2018 City of Carson LA County MS4 Permit
5/25/2018 6/25/2018 LA County MS4 Permittees, City of Long Beach LA County MS4 Permit,
Long Beach MS4 Permit 
5/23/2018 6/22/2018 Rio Hondo-San Gabriel River Water Quality Group LA County MS4 Permit
5/14/2018 6/13/2018 Santa Monica Bay Watershed Jurisdictions 2 & 3 Watershed Management Group LA County MS4 Permit

Written comments will be accepted through the Comment Due Date. Please email comments to the Staff contact and losangeles@waterboards.ca.gov. For more information please see the corresponding Notice.


Contacts

Program Supervisor
Ridgeway, Ivar
Ivar.Ridgeway@waterboards.ca.gov
(213) 620-2150
Senior Environmental Scientist

Documents

  • Draft Watershed Management Program Review and Evaluation Questions
  • Final Reasonable Assurance Analysis Document
  • Notice of Availability of Revised Enhanced Watershed Management Programs Pursuant to the Los Angeles County Municipal Separate Storm Sewer System (MS4) Permit (NPDES Permit No. CAS004001; Order No. R4-2012-0175) and of Upcoming Public Workshop on Revised EWMPS

    • Links

  • Municipal Stormwater
  • Watershed Management Programs
  • Technical Advisory Committee
  • GIS Files and Map of Watershed Management Areas