water usage working out

[erj]

Hi I hope some one can help, I have stared to work for a builder who wants to know the water usage on the house we are working on for the HSBC. There is one bath two showers, 3no whb and 3 WC,s plus kitchen sing dish washer and washer, never been asked about these how do you do it . Thanks in advance.

 

[snowhead]

Water Meter Calculator : Consumer Council for Water

What's more important is how many people will live there?

 

[tamz]

It is just a bit of a guess so they know what size of supply it needs. Much the same as the gas nonsense.