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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

No. Posted Date Comment Due Date
    Permittee
    Document
 Associated Permit
    Staff
    Notice
No. Posted Date Comment Due Date
    Permittee
    Document
 Associated Permit
    Staff
    Notice
1003

4/5/2019

 5/6/2019 City of Rolling Hills LA County MS4 Permit Ivar Ridgeway
1002

3/27/2019

 4/26/2019 City of Manhattan Beach LA County MS4 Permit Ivar Ridgeway
1002 1/31/2019 3/4/2019 Cities of Pasadena, Alhambra, Montebello, Monterey Park, Rosemead, San Gabriel, San Marino, South El Monte, South Pasadena, Temple City; County of Los Angeles LA County MS4 Permit Ivar Ridgeway
1001 01/29/2019 2/28/2019 Rio Hondo-San Gabriel River Water Quality Group LA County MS4 Permit Chris Lopez
1000 01/24/2019 02/25/2019 Beach Cities Watershed Management Group LA County MS4 Permit Ivar Ridgeway
0999 01/23/2019 2/22/2019 Upper San Gabriel River Watershed Management Group LA County MS4 Permit Ivar Ridgeway
0998 01/18/2019 2/18/2019 Palos Verdes Peninsula Watershed Management Group LA County MS4 Permit Rebecca Christmann
0997 01/18/2019 2/18/2019 North Santa Monica Bay Coastal Watershed Management Group LA County MS4 Permit Rebecca Christmann
0996 01/07/2019 2/7/2019 Ballona Creek Watershed Management Group LA County MS4 Permit Chris Lopez
0995 01/07/2019 2/7/2019 Ballona Creek Watershed Management Group LA County MS4 Permit Chris Lopez
0994 01/07/2019 2/7/2019 Ballona Creek Watershed Management Group LA County MS4 Permit Chris Lopez
0993 01/07/2019 2/7/2019 Dominguez Channel Watershed Management Group LA County MS4 Permit Chris Lopez
0992 01/07/2019 2/7/2019 Santa Monica Bay Jurisdictional Group 2 and 3 Watershed Management Group LA County MS4 Permit Chris Lopez
0991 01/07/2019 2/7/2019 Upper Los Angeles River Watershed Management Group LA County MS4 Permit Chris Lopez
0990 01/07/2019 2/7/2019 City of Pomona LA County MS4 Permit Ivar Ridgeway
0989 12/13/2018 1/14/2019 City of Los Angeles, City of Pasadena, County of Los Angeles LA County MS4 Permit
0988 12/13/2018 1/14/2019 City of Industry   LA County MS4 Permit
0987 8/10/2018 9/10/2018 City of La Mirada LA County MS4 Permit
0986 8/6/2018 9/5/2018 Beach Cities Watershed Management Group LA County MS4 Permit
0985 7/30/2018 8/29/2018 North Santa Monica Bay Coastal Watershed Management Group LA County MS4 Permit
0984 6/15/2018 7/16/2018 Various LA County MS4 Permittees, City of Long Beach LA County MS4 Permit
0983 6/15/2018 7/16/2018 City of Alhambra LA County MS4 Permit
0982 6/15/2018 7/16/2018 City of Carson LA County MS4 Permit
0981 5/25/2018 6/25/2018 LA County MS4 Permittees, City of Long Beach LA County MS4 Permit,
Long Beach MS4 Permit 
0980 5/23/2018 6/22/2018 Rio Hondo-San Gabriel River Water Quality Group LA County MS4 Permit
0979 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