<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. 1 )*
-----
California Water Service Co.
-----------------------------------------------------
(Name of Issuer)
Common
-----------------------------------------------------
(Title of Class of Securities)
130789-10-0
-----------
(CUSIP Number)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
Page 1 of 6 pages
<PAGE>
CUSIP NO. 130789-10-0 13G Page 2 of 6 pages
- --------------------- -----------------
- -------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON S.S. or I.R.S.
IDENTIFICATION NO. OF ABOVE PERSON
U. S. Bancorp
601 2nd Ave. South
Minneapolis, MN 55402-4302
Tax I.D. No.: 41-0255900
- -------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) / /
(b) / /
- -------------------------------------------------------------------------------
3 SEC USE ONLY
- -------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware, U.S.A.
- -------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF *
------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY *
------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON *
------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
*
- -------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
*
- -------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES*
- -------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
Less than 5%
- -------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
H.C.
- -------------------------------------------------------------------------------
SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
Page 3 of 6 pages
Item 1
- ------
a. Name of Issuer:
--------------
California Water Service Co.
b. Address of Issuer's Principal Executive Offices:
-----------------------------------------------
California Water Service Co.
1720 N. First St.
San Jose, CA 95112
Item 2
- ------
a. Name of Person Filing:
---------------------
U.S. Bancorp
b. Address of Person's Filing Principal Executive Offices:
------------------------------------------------------
601 2nd Ave South
Minneapolis, MN 55402-4302
United States
c. Title of Class of Securities:
----------------------------
COMMON
d. CUSIP Number:
------------
130789-10-0
Item 3
- ------
The person filing this statement is a:
(g) [x] Parent Holding Company
Item 4
- ------
Ownership:
---------
a. Amount beneficially owned: *
b. Percentage of Class: Less than 5%
c. Number of shares as to which such person has:
1. Sole power to vote or direct the vote: *
2. Shared power to vote or direct vote: *
3. Sole power to dispose or direct the disposition: *
4. Shared power to dispose or direct the disposition: *
Item 5
- ------
Ownership of Five Percent or less of Class: ( XX )
---------------------------------------------
<PAGE>
Page 4 of 6
Item 6
- ------
Ownership of More Than Five Percent on Behalf of Another Person:
----------------------------------------------------------------
Other persons have the right to receive or the power to direct the
receipt of, dividend from, or the proceeds from the sale of, such
securities. To our knowledge no interest of any such person
relates to more than 5% of the class.
Item 7
- ------
Identification and Classification of Members of the Subsidiary
which Acquired the Security Being Reported on by Parent Holding
Company
See Exhibit A
Item 8
- ------
Identification and Classification of Members of the Group:
----------------------------------------------------------
Not Applicable
Item 9
- ------
Notice of Dissolution of Group:
-------------------------------
Not Applicable
Item 10
- -------
Certification
-------------
By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were acquired in the ordinary course of business
and were not acquired for the purpose of and do not have the effect of changing
or influencing the control of the issuer of such securities and were not
acquired in connection with or as a participant in any transaction having such
purposes or effect.
SIGNATURE
---------
After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this Statement is true, complete and correct.
Dated: February 9, 1998
/s/ Merita Schollmeier
- ----------------------
Merita Schollmeier
Vice President
<PAGE>
Page 5 of 6
SECURITIES AND EXCHANGE COMMISSION
Washington D. C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
EXHIBIT A
The Schedule to which this attachment is appended is filed on behalf of the
following subsidiary or subsidiaries listed below, which are classified as banks
for the purposes of 17 CFR 140.13d-1 (b) (ii) (B).
U.S. Bank National Association First Trust National Association
601 2nd Ave. South 180 East Fifth Street, Suite 200
Minneapolis, Minnesota 55402-4302 St. Paul, Minnesota 55101
<PAGE>
Page 6 of 6
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
EXHIBIT B - DISCLAIMER
Information on the attached Schedule 13G is provided solely for the purpose of
complying with Section 13(d) and 13(g) of the Securities Exchange Act of 1934
and Regulations promulgated under authority thereof and is not intended as an
admission that U.S. Bancorp or any of its subsidiaries, is a beneficial owner of
the securities described herein for any other purpose (including without
limitation for purposes of the Minnesota Control Share Acquisition Act).
