X0202 4 2006-08-24 0 0000092472 SOUTHWEST WATER CO SWWC 0001163359 GRIEGO LINDA M 644 S. FIGUEROA STREET LOS ANGELES CA 90017 0 0 0 1 Director until May 16, 2006 Common Stock 2006-08-24 4 P 0 2000 11.56 A 7250 D Common Stock 2006-08-24 4 S 0 2000 13.23 D 5250 D Common Stock 2006-08-24 4 P 0 1500 11.56 A 6750 D Common Stock 2006-08-24 4 S 0 1500 13.08 D 5250 D Common Stock 2006-08-24 4 P 0 1500 11.56 A 6750 D Common Stock 2006-08-24 4 S 0 1500 12.95 D 5250 D Common Stock 2006-08-25 4 P 0 1409 11.56 A 6659 D Common Stock 2006-08-25 4 S 0 1409 13.09 D 5250 D Common Stock 2006-08-25 4 P 0 2419 11.56 A 7669 D Common Stock 2006-08-25 4 S 0 2419 13.08 D 5250 D Common Stock 2006-08-25 4 P 0 781 11.56 A 6031 D Common Stock 2006-08-25 4 S 0 781 13.06 D 5250 D Common Stock 2006-08-25 4 P 0 200 11.56 A 5450 D Common Stock 2006-08-25 4 S 0 200 13.07 D 5250 D Director Stock Options (Right to Buy) 11.56 2006-08-24 4 M 0 2000 13.23 A 2006-05-13 2009-05-13 Common Stock 2000 7250 D Director Stock Options (Right to Buy) 11.56 2006-08-24 4 M 0 1500 13.08 A 2006-05-13 2009-05-14 Common Stock 1500 8750 D Director Stock Options (Right to Buy) 11.56 2006-08-24 4 M 0 1500 12.95 A 2006-05-13 2009-05-14 Common Stock 1500 10250 D Director Stock Options (Right to Buy) 11.56 2006-08-25 4 M 0 1409 13.09 A 2006-05-13 2009-05-14 Common Stock 1409 11659 D Director Stock Options (Right to Buy) 11.56 2006-08-25 4 M 0 2419 13.08 A 2006-05-13 2009-05-14 Common Stock 2419 14078 D Director Stock Options (Right to Buy) 11.56 2006-08-25 4 M 0 781 13.06 A 2006-05-13 2009-05-14 Common Stock 781 14859 D Director Stock Options (Right to Buy) 11.56 2006-08-25 4 M 0 200 13.07 A 2006-05-13 2009-05-14 Common Stock 200 15059 D On May 13, 2004 11,025 (dividend-adjusted) options were granted to Ms. Griego. Options vested 1/2 each anniversary until they were fully vested on May 13, 2006. These shares are held in a joint account for the benefit of Richard C. Peterson and Linda Griego JTWROS. /s/ Linda M. Griego 2006-08-29