The story
The Lambeth Waterworks Company, founded by the Lambeth Waterworks Act 1785 (25 Geo. 3. c. 89) to supply water to south and west London, established premises on the south bank of the River Thames close to the present site of Hungerford Bridge where the Royal Festival Hall now stands. The company's first water-intake lay on the south side of the river, supplied directly from the river. After complaints that the water was foul, the intake was moved to the middle of the river. The Company expanded to supply Kennington in 1802 and about this time replaced its wooden pipes with iron ones.
From Wikipedia’s article on Lambeth Waterworks Company, shared under CC BY-SA 4.0.3