Cascal BV Atrium 7th Floor Strawinskylaan 3105

Exhibit 10.12.5.3

Cascal BV
Atrium 7th Floor
Strawinskylaan 3105
1077 ZX Xxxxxxxxx		00 Xxxxx, 0000
Xxxxxxxxx
Xxx Xxxxxxxxxxx

Dear Sirs,

We, the Borrower under the terms of the Inter-company Loan Agreement dated 28 June 2006 for a sterling facility of £3,500,000, as amended on 13 December 2006, request that the Parties extend the term of this facility from 31 January 2007 until 31 May 2007, or such later date as we might both subsequently agree in writing. The Maturity Date will therefore become 31 May 2007.

We would also wish to take this opportunity to confirm that we repaid US$6,910 (US dollars six thousand nine hundred) on the 9th November 2006 which at the spot exchange rate on that day of 1.9065 means we duly repaid £3,619 (UK pounds three thousand six hundred and nineteen) of this facility on that date. We have also repaid today US$ 500,000 (US dollars five hundred thousand) which at today’s spot exchange rate of 1.9646 means we have duly repaid £254,505 (UK pounds two hundred and fifty four thousand five hundred and five) of this facility today.

Please acknowledge your agreement to the contents of this letter by counter-signing the duplicate copy and returning it to the undersigned.

Yours faithfully,

/s/ XX Xxxxx

XX Xxxxx

Director

xxx.xxxxxxx.xxx

Biwater Plc
Xxxxxxx Xxxxx, Xxxxxxx Xxxxxxxx, Xxxxxxx, Xxxxxx XX0 0XX Xxxxxxx
Tel x00 (0) 0000 000000 fax x00 (0) 0000 000000

Registered in England No. 929686 Registered Office Biwater House, Station Approach, Dorking, Surrey