A number of fire crews have been sent to the Walthamstow water works after a fire broke out within the treatment site on Monday afternoon.
Fire crews were scrambled to Coopermill site just after 2pm after a blaze broke out in the main pumping room.
The water site is owned by Thames Water and the facility Is a major supplier of water to the London area
Crews remain at the site tackling the blaze that is currently under investigation.
More to follow