Rancho Cucamonga / Alta Loma             Montclair

City Hall:                  (909) 477-2700                              City Hall:          (909) 626-8571      

Gas Co.:                    (800) 427-2200                              Gas Co.:            (800) 423-2200

Electric Co.:              (800) 655-4555                              Electric Co.:     (800) 684-8123  

Water Co.:                (909) 987-2591                              Water Co.:        (909) 624-0035  

Trash:                        (909) 987-3717                              Trash:                (909) 822-2396

Telephone Co.:         (800) 483-4000                             Telephone Co. (800) 258-7861

School Dist.:             (909) 987-8942                             School Dist.:     (909) 459-2500