Hi - thanks for your replies! It's still early days - I'm still waiting for the HA to respond to my reporting the faulty pump on Friday. I've just completed video recording the energy consumption from the pump.

Hi, I would love some advice. I moved into a new shared ownership house a year ago. The house is, somewhat ironically, called an ‘Eco-House’. The water pump from the rain water harvesting system is defective. This faulty pump, which is meant to take the rainwater through a pipe system to the upstairs lavatory and washing machine, is permanently on 24/7; that is, constantly operating, whether there is a demand from these appliances or not. These pumps range in power from 800w to over 1000w. Since I moved in and until this week (upon discovering the fault), my electric consumption has been around 20 kWh per day. This has now, since discovering the fault and, for safety reasons, having to switch the faulty pump unit off at the mains, dropped to approximately 8 kWh per day (roughly my consumption in my previous home). Also, of course, before the discovery of the defective pump, it was operating 24/7 for a year, and has had, therefore, the equivalent usage of a pump of 25 years old or so. Using an energy monitor I’m video recording how much this pump uses and I intend to use this as evidence if there is any dispute from the housing association or building contractor. Any other tips/ideas would be greatly appreciated. Thanks, Ianbrodski