Hippo and Save-a-Flush bags
Installing a Hippo couldn’t be easier and will save up to three litres of water per flush. Simply place the device in the water underneath your cistern float. When the toilet is flushed, the water confined within the Hippo’s polyethylene bag is saved. Hippo bags should only be used in toilet cisterns with a 9 litre flush or greater (usually pre-1993). If you have a toilet cistern with a 7-9 litre flush (usually installed 1993-1999), you should use a Save-a-Flush bag. These typically save 1 litre per flush. Dual flush and slimline toilets are already water efficient and do not need any type of cistern device.
Download the following leaflets for advice on installing your water saving device.
(pdf, 54KB)Pick up your free Hippo or Save-a-Flush bag from the Sustainability Unit at events across the borough and at the Civic Centre in Twickenham. Alternatively you can order one online from Thames Water.