Diamond Bar                              Hacienda & Rowland Hgts.

City Hall:       (909) 860-2489                      Chamber of Commerce:   (626) 961-8986

Gas Co.:         (800) 427-2200                      Gas Co.:                            (800) 427-2200

Electric Co.:   (800) 611-1911                     Electric Co.:                      (800) 684-8123

Water Co.:      (909) 595-7554                    Water Co.:                         (626) 918-3701

Trash:              (909) 591-1714                    Trash:                                (213) 685-5217

Telephone Co.: (800) 483-5000                  Telephone Co.:               (800) 483-4000

School Dist.:      (909)595-1261                   School Dist.:                   (626) 963-1000