Bath's water has Virginia lifting leg (4)
I believe the answer is:
avon
'bath's water' is the definition.
The definition suggests a singular noun which matches the answer.
'virginia lifting leg' is the wordplay.
'virginia' becomes 'va' (US state abbreviation).
'lifting' is a reversal indicator.
'leg' becomes 'on' (cricket term, fielding positions).
'va' written backwards gives 'av'.
'av'+'on'='AVON'
'has' is the link.
Can you help me to learn more?
(Other definitions for avon that I've seen before include "River flowing through Shakespeare's Stratford" , "River and former county" , "Name of several English rivers" , "Bath's river" , "English river flowing through Stratford" .)