The Whole Building Handbook by Bokalders Varis Block Maria

Author:Bokalders, Varis, Block, Maria
Language: eng
Format: epub
ISBN: 978-1-136-54327-2
Publisher: Taylor and Francis

Water-Efficient Toilets

The first flush toilets had a cistern up near the ceiling and used 12 litres of water per flush. There were even toilets that used 25 litres of water per flush. When the cistern was moved down behind the seat, flush volume decreased to 9 litres. During the 1960s and 1970s many homes had toilets that used 6 litres of water. Since 2000 most toilets use 4 litres. Toilets with two-button systems are also common, one button for a small 2-litre flush and another button for a large 4-litre flush. It is possible to achieve the same result with considerably less water. There is also equipment on the market that can easily be put into the cistern to reduce the flush water by approximately 2 litres per flush.

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