Document:

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                                                                   Exhibit 10.42

THIS FOURTH DEED is made the 31st day of August, 1989

BETWEEN:  CAYMAN WATER COMPANY LIMITED, a Company incorporated and existing
          under the laws of the Cayman Islands with registered office in George
          Town, Grand Cayman, Cayman Islands (hereinafter called "the Borrower")
          OF THE ONE PART

AND:      THE ROYAL BANK OF CANADA of P.O. Box 245, George Town, Grand Cayman,
          Cayman Islands (hereinafter called "the Bank") OF THE OTHER PART

WHEREAS:-

1.   This Deed is made supplemental to the Debenture ("the Debenture") dated 1st
     June, 1979 between the Borrower, the Bank, Philip H. Lustig ("Lustig") and
     Cayman Public Utilities Ltd. ("CPU") as supplemented by Deed dated 30th
     April, 1981 between the Borrower and the Bank and the Second Deed dated
     10th March, 1983 between the Borrower and the Bank and the Third Deed dated
     6th December, 1984 between the Borrower and the Bank and to all collateral
     security documents and agreements executed pursuant thereto (hereinafter
     together called "the Bank's security").

2.   The Bank has agreed to extend to the Borrower additional credit facilities
     to the extent of Seven Hundred and Seventy-six Thousand Two Hundred and
     Thirty-nine United States Dollars (US$776,239.00) or its equivalent in
     Cayman Islands Dollars upon having the same security and manner hereinafter
     appearing.

NOW THIS DEED WITNESSETH as follows:-

1.   In consideration of the said agreement the Borrower and the Bank hereby
     agree that the Debenture shall hereafter stand as security for all sums
     owing to the Bank from time to time up to a maximum of One Million One
     Hundred Twenty-one Thousand Eight Hundred Sixty-five Cayman Islands Dollars
     and Eighty cents (CI$1,121,865.80) (or its equivalent in United States
     Dollars) together with interest thereon provided that the Bank shall have
     the right in its sole discretion to determine what proportion of the
     additional credit facilities shall be advanced in Cayman Islands Dollars
     and what proportion in United States Dollars.

2.   The rate of interest payable on so much of the principal sum

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[PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]
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     as is payable in Cayman Islands Dollars shall be at the Bank's Prime
     Lending Rate for Cayman Islands Dollars or such other rate as the Bank may
     from time to time advise the Borrower and on so much thereof as is payable
     in United States Dollars at a rate of two percent (2%) per annum above the
     Bank's Prime Lending Rate for United States Dollars or such other rate as
     the Bank may from time to time advise the Borrower.

3.   Insofar as not hereby expressly waived or varied the Borrower and the Bank
     hereby confirm the terms and provisions of the Debenture.

IN WITNESS WHEREOF the parties hereto have executed this Deed the day and year
first above written.

THE COMMON SEAL OF CAYMAN                         CAYMAN WATER COMPANY LIMITED
WATER COMPANY LIMITED was hereunto
affixed by                                        /s/ Jeffrey Parker
and by                                            -----------------------------
in the presence of:-                                  DIRECTOR

                                                  /s/ illegible
                                                  -----------------------------
                                                      SECRETARY

-------------------------
WITNESS

SIGNED SEALED AND DELIVERED BY                    THE ROYAL BANK OF CANADA
D. J. STEWART the duly
authorised Attorney for the Bank                  /s/ illegible
in the presence of:-                              -----------------------------
                                                     ATTORNEY FOR THE BANK

-------------------------
WITNESS

                  [PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]

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I, H.C. CHISHOLM of George Town, Grand Cayman, Cayman Islands make oath and say
as follows:-

1.   The foregoing Deed made between Cayman Water Company Limited ("the
     Borrower") of the one part and The Royal Bank of Canada ("the Bank") of the
     other part was made by the Borrower and the Bank on the ___ day of August,
     1989.

2.   I was present and did see D.J. Stewart, the duly authorised Attorney for
     and on behalf of the Bank sign seal and as for his proper act and did
     execute acknowledge and deliver the said Deed for the purposes therein
     mentioned on the 19th day of October, 1989 between the hours of 10 a.m. and
     11 a.m. in the forenoon at George Town, Grand Cayman, Cayman Islands.

3.   The Bank is a banking corporation existing under the Laws of the Canada and
     having a branch office in George Town, Grand Cayman, Cayman Islands.

4.   That the name H.C. CHISHOLM subscribed as a witness attesting to the due
     execution of the said Deed by the Borrower is of the proper handwriting of
     me this deponent and I reside at George Town, Grand Cayman and am a Banker.

                                        ------------------------

SWORN AT George Town, Grand Cayman, Cayman Islands this 19th day of October,
1989 before me:-

                                        ------------------------

[PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]

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I, Royce M. Scott of George Town, Grand Cayman, Cayman Islands make oath and
say as follows:--

1.   The foregoing Deed made between Cayman Water Company Limited ("the
     Borrower") of the one part and The Royal Bank of Canada ("the Bank")
     of the other part was made by the Borrower and the Bank on the 31st day of
     August, 1989.

2.   I was present and did see Jeffrey M. Parker and Margaret           Director
     and Secretary respectively of the Borrower affix the Common Seal of the
     Borrower to the said Deed and sign the same as and for the proper act and
     deed of the Borrower and execute acknowledge and deliver the said Deed for
     the purposes therein mentioned on the 11th day of October, 1989 between
     the hours of 8:00 and 9:00 in the forenoon at George Town, Grand Cayman,
     Cayman Islands.

3.   The Borrower has its registered office at George Town, Grand Cayman, Cayman
     Islands and is a Company duly incorporated and existing under the Laws of
     the Cayman Islands.

4.   That the name Royce M. Scott, subscribed as a witness attesting to the due
     execution of the said Deed by the Borrower is of the proper handwriting of
     me this deponent and I reside at #28 Mariner's Cove, Grand Cayman and am an
     Accountant.

                                                 /s/
                                                 ------------------------------

SWORN AT George Town, Grand Cayman, Cayman Islands this 11th day of August,
1989 before me:--

                                                 /s/
                                                 ------------------------------

                            [PUBLIC RECORDER STAMP]

                  [PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]

                                       4<PAGE>   1
                                                                   Exhibit 10.43

THIS FIFTH DEED is made the 16 day of June, 1992.

BETWEEN:  CAYMAN WATER COMPANY LIMITED, a Company incorporated and existing
          under the Laws of the Cayman Islands and having its registered office
          situate at George Town, Grand Cayman (hereinafter called "the
          Borrower") OF THE ONE PART

AND:      THE ROYAL BANK OF CANADA of P. O. Box 245, George Town, Grand Cayman
          (hereinafter called "Bank") OF THE OTHER PART

WHEREAS:

1.   This Deed is made supplemental to a Debenture ("the Debenture") dated the
     1st day of June, 1979 between The Borrower, the Bank, Philip H. Lustig
     ("Lustig") and Cayman Public Utilities Ltd. ("CPU") as supplemented and
     amended by Deed dated 30th April, 1981 between the Borrower and the Bank
     and the Second Deed dated 10th March, 1983 between the Borrower and the
     Bank and the Third Deed dated 6th December, 1984 between the Borrower and
     the Bank and the Fourth Deed dated the 31st August, 1989 between the
     Borrower and the Bank and to all collateral security documents and
     agreements executed pursuant thereto (hereinafter together called "the
     Bank's Security").

2.   The Borrower currently has authorised credit facilities up to a maximum of
     CI$1,121,865.80 and the Bank has agreed to extend to the Borrower in place
     thereof separate credit facilities as set out below:

NOW THIS DEED OF ASSIGNMENT WITNESSETH as follows:-

1.   In consideration of the said agreement the Borrower and the Bank hereby
     agree that the Debenture shall hereafter stand as security for all sums
     owing to the Bank from time to time up to a maximum of the aggregate of One
     Million One Hundred and Six Thousand Two Hundred and Fifteen United States
     Dollars (US$1,106,215.00) plus Ten Thousand Cayman Islands Dollars
     (CI$10,000.00) ("the Principal Sum") together with interest thereon instead
     of the previously secured facilities.

2.   The Principal Sum shall be established by way of three accounts namely:-

[PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]
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     (a)  a United States Dollar loan account in the sum of US$1,000,000.00
          repayable on demand but prior to demand by way of payments of interest
          only until May, 1994 and thereafter repayable by way of monthly
          payment of US$22,000.00 inclusive of interest and repayable thereby in
          full on the 30th May, 1999. The terms shall be subject to call and
          annual review by the Bank.

     (b)  An overdraft facility in the amount of CI$10,000.00 subject to the
          Bank's policies and regulations with regard to overdrafts in force
          from time to time.

     (c)  A standby letter of credit for one year in the sum of US$106,215.00
          with an automatic renewal clause to 31st March, 1995 but providing
          that cancellation must be requested in writing 30 days prior to any
          annual expiry date but otherwise subject to the Bank's conditions and
          regulations with regard to letters of credit in force from time to
          time.

3.   The rate of interest payable on so much of the Principal Sum as is payable
     in Cayman Islands Dollars shall be at the Bank's Prime Lending Rate for
     Cayman Islands Dollars plus two percent (2%) per annum or such other rate
     as the Bank may from time to time advise the Borrower and on so much
     thereof as is payable in United States Dollars at a rate of two percent
     (2%) per annum above the Bank's Prime Lending Rate for United States
     Dollars or such other rate as the Bank may from time to time advise the
     Borrower.

4.   For the avoidance of any doubt whatsoever the Bank and the Borrower hereby
     reconfirm the provisions of Clause 14 (i) of the Debenture regarding
     insurance and Clause 14 (xi) of the Debenture regarding the covenant of
     the Borrower not to declare dividends without the written consent of the
     Bank.

5.   Insofar as not hereby expressly waived or varied the Borrower and the Bank
     hereby confirm the terms and provisions of the Bank's Security.

[PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]
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IN WITNESS WHEREOF the parties hereto have executed this Deed the day and year
first above written.

THE COMMON SEAL OF CAYMAN               CAYMAN WATER COMPANY LIMITED
WATER COMPANY LIMITED was               /s/ Jeffrey Parker
hereunto affixed by                     ----------------------------
Jeffrey M. Parker                       DIRECTOR
and by Peter D. Robbins                 /s/ Peter Ribbins
in the presence of:                     ----------------------------
                                        DIRECTOR

------------------------------
WITNESS

SIGNED SEALED AND DELIVERED BY          THE ROYAL BANK OF CANADA
D.J. STEWART the duly
authorised Attorney for the
Bank                                    /s/ D.J. Stewart
                                        ----------------------------
                                        ATTORNEY FOR THE BANK
in the presence of:-

------------------------------
WITNESS

[PUBLIC RECORDER STAMP]

[PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]
<PAGE>   4
I, Harry Chisholm of George Town, Grand Cayman, Cayman Islands make oath and
say as follows:-

1.   The foregoing Deed made between Cayman Water Company Limited ("the
     Borrower") of the one part and The Royal Bank of Canada ("the Bank") of the
     other part was made by the Borrower and the Bank on the 16th day of June,
     1992.

2.   I was present and did see D.J. Stewart, the duly authorised Attorney for
     and on behalf of the Bank sign seal and as for his proper act and did
     execute acknowledge and deliver the said Deed for the purposes therein
     mentioned on the 16th day of June, 1992 between the hours of 10:00 a.m. and
     10:30 a.m. in the forenoon at George Town, Grand Cayman.

3.   The Bank is a banking corporation existing under the Laws of Canada and
     having a branch office in George Town, Grand Cayman, Cayman Islands.

4.   That the name Harry Chisholm, subscribed as a witness attesting to the due
     execution of the said Deed by the Borrower is of the proper handwriting of
     me this deponent and I reside at North Side, Grand Cayman and am a Snr.
     Assistant Bank Manager.

                                        /s/
                                        -----------------------------

SWORN AT George Town, Grand Cayman, Cayman Islands this 16th day of June, 1992
before me:-

                                        /s/
                                        -----------------------------

[Public Record Office Cayman Islands Stamp]
<PAGE>   5
I, Margaret L. Julier of George Town, Grand Cayman, Cayman Islands make oath
and say as follows:-

1.   The foregoing Deed made between Cayman Water Company Limited ("the
     Borrower") of the one part and The Royal Bank of Canada ("the Bank") of the
     other part was made by the Borrower and the Bank on the 16th day of June,
     1992.

2.   I was present and did see Jeffrey M. Parker and Peter D. Ribbins Directors
     respectively of the Borrower affix the Common Seal of the Borrower to the
     said Deed and sign the same as and for the proper act and deed of the
     Borrower and execute acknowledge and deliver the said Deed for the purposes
     therein mentioned on the 16th day of June   , 1992 between the hours of
     2:00 p.m. and 3:00 p.m. in the forenoon at George Town, Grand Cayman,
     Cayman Islands.

3.   The Borrower has its registered office at George Town, Grand Cayman, Cayman
     Islands and is a Company duly incorporated and existing under the Laws of
     Cayman Islands.

4.   That the name Margaret L. Julier, subscribed as a witness attesting to the
     due execution of the said Deed by the Borrower is of the proper handwriting
     of me this deponent and I reside at Snug Harbour, Grand Cayman and am a
     Office Manager.

                                                        ------------------------

SWORN AT George Town, Grand Cayman, Cayman Islands this     day of    , 1992
before me:-

                                                         -----------------------

                                                      [3 CAYMAN ISLAND GRAPHICS]

[PUBLIC RECORD OFFICE CAYMAN ISLANDS STAMP]

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