Cascal BV Atrium 7th floor Strawinskylaan 3105

Exhibit 10.12.5.2

Cascal BV
Atrium 7th floor
Xxxxxxxxxxxxxx 0000
1077 ZX Amsterdam		13 December, 2006
Amsterdam
The Netherlands

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, request that the Parties extend the term of this facility from 31 October 2006 until 31 January 2007, or such later date as we might both subsequently agree in writing. The Maturity Date will therefore become 31 January 2007.

We would also wish to take this opportunity to confirm that we repaid US $1,610,000 (US Dollars one million six hundred & ten thousand dollars) on the 9th November 2006 which at the spot exchange rate on that day of 1.9065 means that we duly repaid £844,479 (UK pounds eight hundred & forty-four thousand four hundred & seventy nine) of this facility on that date.

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
Finance Director
/s/ Xxxxxxxx Xxxxxx Xxxx Xxxxxx
For and on behalf of Cascal BV
Date:		13-12-2006

xxx.xxxxxxx.xxx

Biwater Plc
Biwater House, Station Approach, Dorking, Surrey RH4 1TZ England
Tel x00 (0) 0000 000000 fax x00 (0) 0000 000000

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