Turning faucets causes quarrel (4)
I believe the answer is:
spat
'quarrel' is the definition.
(spatting is a kind of quarrelling)
'turning faucets' is the wordplay.
'turning' says the letters should be written backwards.
'faucets' becomes 'taps' (tap is a kind of faucet).
'taps' written backwards gives 'SPAT'.
'causes' is the link.
(Other definitions for spat that I've seen before include "Pat's involved in squabble" , "Showed contempt" , "Contretemps" , "Spoke violently" , "Petty row" .)