Thames Water have confirmed today that their pump was clogged and this has been the main cause of low water levels in the Enfield Loop. Thames Water have cleared the blockage and the pump is now operating fully. It is now expected that the water levels will begin to recover. Now that the pump is operational it will take some time for the water levels to recover fully (possibly up to a week).
The 2 backup pumps, which are the responsibility of Enfield Council, are currently subject to repair orders as they both have separate functionality issues.