Water saving products
Water saving cistern device
The Hippo and the Save-a-flush are both designed to save water each time you flush the toilet. These devices are FREE of charge to all domestic customers. Fitting one in a toilet cistern will save water each time you flush.
| Which device do you need for your toilet? | ||
| Cistern Size | Year fitted | Hippo or Save-a-flush? |
| 9 litres or more | 1991 or earlier | Hippo |
| 7.5 litres | 1991 - 2001 | Save-a-flush |
| 6 litres or less | 2001 or later | Neither (leave as is) |
| Possible ways to find out the size or year of your toilet | |
| 1. | Remove the lid and see if the size is marked anywhere inside. |
| 2. | Decide what year the cistern was fitted. |
| 3. | Flush the toilet and count how long it takes to flush – i.e. "1 litre; 2 litres; 3 litres... etc". The number you reach when it stops flushing will confirm its size |
| 4. | If you have a slimline toilet cistern we recommend that only the Save-a-Flush is used. |
 | A Save-a-flush will reduce each flush by 1 litre. More recently installed toilets will use 6 litres which is the current standard and should not be reduced further. |
 | A Hippo will reduce each flush by about 2.5 litres. Only use a hippo If your toilet was installed prior to 1991. |