Yes I think there is? if you google your question a well known company have some ideas. Also you can put a water collection tub with tap on your down pipes

You could connect a water butt this is what I did. woks well. Theres a company that has a syphon that you put in the bath and it drains into a container then you can use the water in the garden. Are we allowed to say company names DRC? i have in the past didnt know I shouldn't?

I am never quite sure Great. I think most members send a personal message to give that sort of detail?

ooops!!

No one seems to object Great, but try looking in the guidelines.

It may be easier to find info by using the commonest name for that type of system: "gray water"