Calculate your stormwater offset contribution
Stormwater offset contributions are paid by developers to reduce the impacts of stormwater pollution from urban developments.
Developers pay a contribution to us for necessary stormwater management works if they don’t meet their stormwater objectives. Contributions are paid as development occurs.
Stormwater offset contributions apply primarily for areas outside of drainage schemes. However, some drainage schemes also include a stormwater offset rate.
The table below shows the rates per hectare for each municipality.
Use the calculator for the relevant council to calculate your contribution based on your development type and size.
The calculator stipulates the level of best practice expected within a development. The level of treatment achieved (% of best practice) can be increased beyond the expected amount or decreased where mitigating circumstances prevent local treatment.
This calculator is provided for illustrative purposes only as it is not possible to provide for all special conditions which may apply in particular circumstances. The results generated are based on the accuracy of information and on the assumptions shown or selected by you. The information which you calculate using this calculator is an approximate guide only and the existence of a printout does not constitute any agreement on the level of developer contributions which will apply. The terms and conditions for particular development schemes may be varied or introduced in the future. Fees and charges may by payable. For confirmation of contributions payable please submit a formal application for conditions to the Land Development Team at Melbourne Water by filling in the Application for Conditions Agreement.