WESTERN WATER CO

Q: Dec 31 2004

Q: Sep 30 2004

Q: Sep 30 2004

FY: Mar 31 2004

FY: Mar 31 2004

Q: Dec 31 2003

Q: Sep 30 2003

Q: Jun 30 2003

FY: Mar 31 2003

Q: Dec 31 2002

Q: Sep 30 2002

Q: Jun 30 2002

FY: Mar 31 2002

FY: Mar 31 2002

FY: Mar 31 2002

Q: Dec 31 2001

Q: Sep 30 2001

Q: Jun 30 2001

FY: Mar 31 2001

Q: Dec 31 2000

1.03,3.01,3.03,5.01,5.03,8.01,9.01

3.03,8.01,9.01

2.01,2.05,9.01

1.01

1.02

1.01

Bankruptcy or Receivership

8.01

1.01

7.01,8.01

7.01,8.01,9.01

Changes in Registrant.s Certifying Accountant

8.01

5

5

5

5,7

5

6

5

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

No description available

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Prospectus Supplement with Pricing Information

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

PRICE T ROWE ASSOCIATES INC /MD/

PRICE T ROWE ASSOCIATES INC /MD/

NORRIS REGINALD M

NORRIS REGINALD M

KENNY DENNIS J

PRICE T ROWE ASSOCIATES INC /MD/

ABEL DAVID A

PRICE T ROWE ASSOCIATES INC /MD/

PRICE T ROWE ASSOCIATES INC /MD/

INTERAGUA SERVICIOS INTEGRALES DEL AGUA S A

PRICE T ROWE ASSOCIATES INC /MD/

CREDIT SUISSE ASSET MANAGEMENT /NY

CREDIT SUISSE ASSET MANAGEMENT /NY

MEMORIAL DRIVE TRUST

PRICE T ROWE ASSOCIATES INC /MD/

CRAMER ROSENTHAL MCGLYNN LLC /ADV

PRICE T ROWE ASSOCIATES INC /MD/

MEMORIAL DRIVE TRUST

WARBURG PINCUS ASSET MANAGEMENT INC

INTERAGUA SERVICIOS INTEGRALES DEL AGUA S A