Defence of the realm, Steamy - or an imperial outpost to keep the natives in check depending on your view !!

regards

Barney

Docmartin
Only one of us uses the bath and when used only about 100 to 120mm deep. This is nothing like 130L. I prefer the shower (6L/m max).

GaryB
This house was designed for short runs with the services clustered to allowed short supply and waste. The pipework is minimum diameter with with all hot water running from a manifold close to the boiler. The wash basins are fed in 10mm and the kitchen, shower and bath in 15mm. The max flow from any hot tap except the bath is 4L/m. The response time is relatively good on all but the kitchen which can de a bit lengthy.

I suspect that the Water Efficiency Calculator is a bit wrong-headed and that most of the consumption in domestic application is volume priority and not so much determined by flow rate. I do know my wife gets very cross about how long it takes to to put water in anything, pan, kettle, bath, wash basin. I cannot offset that by showing a reduced waster bill because it is not significantly lower. We have always be careful not to be wasteful.