However, its leakage rates account for around 25% of the 2.6 billion litres it supplies a day to customers. In fact the leakage rate is five times higher than the 5% that will be saved by the hosepipe ban.
Thames Water leaks are enough to fill Wembley Stadium every 36 hours.
New Scientist’s environment consultant, Fred Pearce, said:
"Thames Water’s leakage rates are obscene.Oh, and by the way, Thames Water increased its prices by 6.7% at the end of March.
Regulators and planning inspectors have been telling them for decades to get their act together – but the company’s efforts are sporadic and sometimes grudging."
Could it be possible that its "leakage targets" are not particularly challenging?