IMM wrote:

The avergage bath is now 80-100 litres.

The average 'tin tub in front of fire' you mean?

Our bath is 270 litres capacity to overflow. SWMBO fills it to the
overflow. Discounting her volume, which can't be more than say 60
litres, that's 210 litres of water. Ours in not a particularly large bath.


--
Grunff