Don't drink at basin for a change (7)
I believe the answer is:
abstain
'don't drink' is the definition.
(I've seen this before)
'at basin for a change' is the wordplay.
'for a change' indicates an anagram.
'at'+'basin'='atbasin'
'atbasin' anagrammed gives 'ABSTAIN'.
(Other definitions for abstain that I've seen before include "Cut it out!" , "go on wagon" , "Give up smoking, say" , "'Refrain from, voting or eating, say (7)'" , "Do without, as in lent" .)