An overall rates increase of 8.7% is being proposed by Environment Canterbury (ECan) in the 2010-11 draft annual plan the regional council will be asked to adopt tomorrow.
However, some ratepayers paying targeted rates face larger increases.
If the council approves the draft plan, it will go out for public consultation, calling for submissions which close on April 30.
Next financial year, the council is proposing to raise its general rate 3.9% and its targeted rates by 14.3%.
One of the main causes of the increase is the Canterbury water management strategy, prepared jointly by Canterbury's mayors, its 10 district and city councils and ECan.
It is adding almost half to the projected rates rise.
Other changes have come from ECan's clean heat project, the energy efficiency programme, building and consent authority regulation of dams, navigation safety bylaws for Lyttelton and Timaru harbours, possum control, waste, hazardous substances and contaminated sites monitoring and communication and public transport.