Canny to keep jug for removal of waste (8)
I believe the answer is:
sewerage
'removal of waste' is the definition.
'sewerage' can be an answer for 'waste' (sewerage is a kind of waste). I am unsure of the 'removal of' bit.
'canny to keep jug' is the wordplay.
'canny' becomes 'sage' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to keep' is an insertion indicator.
'jug' becomes 'ewer' (type of vessel).
'sage' placed around 'ewer' is 'SEWERAGE'.
'for' is the link.
Can you help me to learn more?
(Other definitions for sewerage that I've seen before include "Waste matter carried away drains" , "Provision of drainage" , "waste products" , "System of drains to carry away waste" , "removal of waste matter" .)