Thames Water, weighed down by 14 billion pounds of debt and under pressure over its environmental record, had told shareholders it needed 1 billion pounds to help fund its turnaround.
British ministers have been monitoring Thames Water amid fears it could need a government rescue if shareholders refused to invest more.
"Shareholders have also acknowledged that delivery of the turnaround plan is likely to require the provision of further equity support," Thames Water said.
The 750 million pound investment is subject to Thames Water improving the business plan underpinning its turnaround, it said.
Core earnings (EBITDA) fell 3% to 1.1 billion on revenue which grew 4% to 2.3 billion pounds.
Persons:
Ian Marchant, Sarah Young, Kate Holton
Organizations:
Water, Thames, China Investment Corp, Thomson
Locations:
Ontario