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There is no water shortage. What we have in this country is a storage shortage, probably because we never imagined we would run out of rain. Water butts are a good idea -to a limited extent. This one holds up to 100 litres and is fed by the downpipe from a pitched roof approximately 6.5m long by 5m wide which is 35.75 square metres. Given the average rainfall in the region that roof will receive…