Praise for water supply now completed (4,4)
I believe the answer is:
well done
'praise for water supply now completed' is the definition.
I can't judge whether this defines the answer.
'water supply now completed' is the wordplay.
'water supply' becomes 'well' (a well is a source of water).
'now completed' becomes 'done' (something that's been completed has been done. I am not sure about the 'now' bit.).
'well'+'done'='WELL-DONE'
Can you help me to learn more?
(Other definitions for well done that I've seen before include "Congratulations - cooked right through" , "Words of praise" , "Far from rare" , "Water supply fixed?" , "Congratulations - certainly not rare!" .)