Madam, – The average person consumes 150 litres of water per day, of which 80 litres are used for cooking, drinking, showering, etc. The other 70 litres are used to flush toilets and wash clothes.
A simple rearrangement of domestic plumbing systems, particularly for houses under construction, could ensure that water for toilets, laundry, car-washing and gardening comes from harvested rainwater, of which there are various systems, and not from expensively treated local authority water.
More than 100,000 litres of rainwater flows over the average roof each year. With the imminent arrival of domestic water charges and the huge cost incurred by local authorities in treating water, a simple change in our plumbing systems could mean a large saving for all. – Yours, etc,