It comes as regulators confirmed water company environmental performance has fallen once again.
Thames Water was given just one star out of four in its recent Environmental Performance Assessment.
Monica Harding, MP for Esher & Walton, which come under Thames Water, has long spoken of her frustrations with the water company:
At the Labour Party conference, Andy Burnham promised a strengthened Water Bill, and an end to the ban on public ownership.
A spokesperson for Thames Water said at the time, it will take at least a decade to achieve the scale of change required.
