Water conduit snapped — it must be repaired (9)
I believe the answer is:
standpipe
'water conduit' is the definition.
'standpipe' can be an answer for 'conduit' (standpipe is a kind of conduit). I am not sure about the 'water' bit.
'snapped it must be repaired' is the wordplay.
'must be repaired' indicates anagramming the letters.
'snapped'+'it'='snappedit'
'snappedit' with letters rearranged gives 'STANDPIPE'.
Can you help me to learn more?
(Other definitions for standpipe that I've seen before include "Emergency water supply" , "Temporary water outlet" , "main conduit in emergencies?" , "temporary feed" , "Source of water during shortage" .)