Just reading through the latest Auto Express and it appears that Defra have cocked it up again! According to their water saving fact sheet, washing a car takes 540 litres of water!!
http://archive.defra.gov.uk/environment ... ngtips.pdf
They have assumed that we will all be leaving our hoses running for at least 30mins and not going near them whilst they blast 18 litres/min all over the drive etc. In tests carried out by AE it was found that a bucket and watering can used 44 litres, and a hoze and jet nozzle just 24 litres.
Defra have refused to justify their figures and say hosepipe bans 'reinforce' the need to be careful! In 2006, water companies saw a 10-15% drop in consumption when bans were in place. That tends to support the lower domestic consumption rates than the Defra tables suggest - or industry uses far more.
Defra obviously believes that those of us on meters are quite happy to pour water away! I've used a jet nozzle for at least 30 years even when not on a metered supply. I don't want water everywhere thank you.
Be interesting to see just how much a snow foam, wash and rinse via a PW uses, but I bet it isn't 540l

Probably somewhere between the two methods above.
There was also an article on the local news a couple of days back about water being pumped away from areas with a ban and in to areas with no ban. The water company rep had no answer for that one except it was what the instructions from the Environment Agency told them they had to do. Some wierd logic going on there!
