It pushes up water rates in a reorganisation (8)
I believe the answer is:
artesian
'it pushes up water' is the definition.
The definition suggests a singular noun but the answer is not.
'rates in a reorganisation' is the wordplay.
'reorganisation' is an anagram indicator.
'rates'+'in'+'a'='ratesina'
'ratesina' anagrammed gives 'ARTESIAN'.
Can you help me to learn more?
(Other definitions for artesian that I've seen before include "(Well) fed by pressure" , "This well is bored vertically into the ground" , "Type of deep well" , "A nastier sort of well, oddly" , "Type of well made from a sea train" .)