Surprisingly, simply flushing the toilet already takes up a whopping 18% of the total water bill. It is easy to run up the water bill with weak, inefficient flushes that require multiple presses, but with an efficient flush, this percentage can be significantly reduced.
A water-efficient water closet with a dual flush can save up to 5 litres of water and at the same time offer a powerful flush. In other words, a simple replacement of your fill and flush valves could save you up to 10% of monthly water bills!