EXHIBIT 21.1

                    SOUTHWEST WATER COMPANY AND SUBSIDIARIES

                       SUBSIDIARIES OF THE REGISTRANT (1)




 
                                Jurisdiction
                                     of
  Name of Subsidiary            Incorporation   Parent
- -----------------------------   -------------   -----------------------
                                           
Suburban Water Systems          California      Southwest Water Company
 
New Mexico Utilities, Inc.      New Mexico      Southwest Water Company
 
ECO Resources, Inc.             Texas           Southwest Water Company
 
Water Suppliers Mobile
 Communication Service          California      Suburban Water Systems
 
SW Resource Management
 Company                        Delaware        Southwest Water Company
 
SOCI, Inc. (2)                  Delaware        Southwest Water Company
 
SW Operating 
 Services Co. (2)               Delaware        Southwest Water Company
 
Southwest Environmental
 Laboratories, Inc. (2)         Texas           ECO Resources, Inc.
 
Southern Municipal
 Services, Inc. (2)             Texas           ECO Resources, Inc.



All above listed subsidiaries have been consolidated in the Registrant's
financial statements.

(1)  As of March 29, 1995
(2)  Inactive