Wealthy responsible for waterhole fuss (4-2-2)
I believe the answer is:
well-to-do
'wealthy' is the definition.
(I've seen this before)
'waterhole fuss' is the wordplay.
'waterhole' becomes 'well'.
'fuss' becomes 'todo' (both can mean a commotion).
'well'+'todo'='WELL-TO-DO'
'responsible for' acts as a link.
(Other definitions for well-to-do that I've seen before include "Financially comfortable" , "Quite wealthy" , "Fairly wealthy" , "with a lot of funds" , "Affluent" .)