Questions About Your Water Service?

Contact us. Golden State Water Company’s customer service representatives are standing by to assist you with any of your questions or concerns. For 24-hour emergency and customer service please call 1-800-999-4033 or (909) 394-2272 (local).

Customer Service

Toll Free:1-800-999-4033
Local: (909) 394-2272
24 hours, 7 days a week

Report Water Waste

Click here to report water waste in your community.

Corporate Office

To contact us via email, please write us at: customerservice@gswater.com.

Corporate Office Mailing Address

630 E. Foothill Blvd., San Dimas, CA 91773

Local Office Contact Information

  • Apple Valley CSA
    13608 Hitt Road
    Apple Valley, CA 92308
    General Manager: Perry Dahlstrom
  • Arden Cordova CSA
    3005 Gold Canal Drive
    Rancho Cordova, CA 95670
    General Manager: Paul Schubert
  • Barstow CSA
    1521 E. Main Street
    Barstow, CA 92311
    General Manager: Perry Dahlstrom
  • Bay Point CSA
    53 B Manor Drive
    Bay Point, CA 94565
    General Manager: Paul Schubert
  • Calipatria CSA
    631 S. Sorenson Avenue
    Calipatria, CA 92233
    General Manager: Perry Dahlstrom
  • Central Basin East CSA
    11469 Rosecrans Avenue
    Norwalk, CA 90650
    General Manager: Rich Mathis
  • Central Basin West CSA
    7105-D Eastern Avenue
    Bell Gardens, CA 90201
    General Manager: Rich Mathis
  • Claremont CSA
    915 W. Foothill Boulevard, #E
    Claremont, CA 91711
    General Manager: Benjamin Lewis
  • Clearlake CSA
    14595 Olympic Drive, Suite A
    Clearlake, CA 95422
    General Manager: Paul Schubert
  • Culver City CSA
    5839 Green Valley Circle, Suite 106
    Culver City, CA 90230
    General Manager: Rich Mathis
  • Los Alamitos CSA
    10852 S Cherry Street
    Los Alamitos, CA 90720
    General Manager: Ken Vecchiarelli
  • Los Osos CSA
    1140 Los Olivos Avenue
    Los Osos, CA 93402
    General Manager: Mark Zimmer
  • Morongo Valley CSA
    49634 Twentynine Palms Highway
    Morongo Valley CA 92256
    General Manager: Perry Dahlstrom
  • Ojai CSA
    408 Bryant Circle, Suite G
    Ojai, CA 93023
    General Manager: Mark Zimmer
  • Placentia CSA
    500 Cameron Street
    Placentia, CA 92870
    General Manager: Ken Vecchiarelli
  • San Dimas CSA
    115-121 Exchange Place
    San Dimas, CA 91773
    General Manager: Benjamin Lewis
  • San Gabriel CSA
    110 East Live Oak Avenue
    Arcadia, CA 91006
    General Manager: Benjamin Lewis
  • Santa Maria CSA
    2330 A Street, Suite A
    Santa Maria, Ca 93455
    General Manager: Mark Zimmer
  • Simi Valley CSA
    4680 E Los Angeles Avenue, Suite H
    Simi Valley CA 93063
    General Manager: Mark Zimmer
  • Southwest CSA
    1600 W. Redondo Beach Boulevard, #101
    Gardena, CA 90247
    General Manager: Kate Nutting
  • Wrightwood CSA
    1500 State Highway #2
    Wrightwood, CA 92397
    General Manager: Perry Dahlstrom