X0202 4 2005-09-01 0 0000092472 SOUTHWEST WATER CO SWWC 0000937852 GARNIER ANTON C 624 SOUTH GRAND AVENUE SUITE 2900 LOS ANGELES CA 90017 1 1 0 0 CEO & Chairman Common Stock 2005-09-01 4 S 0 2000 13.20 D 364895 D The sales reported in this Form 4 were effected pursuant to Rule 10(b)(5)(1)-1 trading plan adopted by the reporting person on 8/12/05. These shares are held in a joint trust for the benefit of the person's family: Anton C. Garnier TR UA 07-01-91, FBO The Anita and Anton Garnier Family Trust. Anton C. Garnier 2005-09-01