Charging for sewerage (wastewater)


For sewerage (wastewater) charges there are two parts to the general formulae for the calculation of charges; an annual access charge and a treatment/usage charge.

Residential customers

Sewer access annual charges

Residential customers pay the same annual charge no matter whether they are a house, a unit or a flat. This amount has been calculated using the two parts of the general formulae (refer to Council’s Fees and Charges for current charge) and is levied in three equal installments.

Non-residential customers

Sewer access annual charges

This charge is based on the number of meters and the size of each meter servicing the property. The base charge is multiplied by a Sewerage Discharge Factor (SDF) which is set at 0.95 unless otherwise negotiated on the basis of actual or industry specific discharge rates.

Example: The sewer access charge for a non-residential property with one standard 32mm water meter service is:

  • Sewer access charge x SDF = total access charge
  • $636.30 x 0.95 = $604.49

The total access charge will be charged in three equal installments.

Sewer treatment charges

Sewer treatment is calculated using the number of kilolitres of water consumed multiplied by the Sewerage Discharge Factor (SDF) multiplied by a sewerage usage rate of $2.92 per kilolitre. The SDF is set at 0.95 unless otherwise negotiated on the basis of actual or industry specific discharge rates.  

Example: The sewer treatment charge for a non-residential property that used 100 kilolitres of water during the billing period would be:

  • kL used x SDF x sewer treatment charge per kL
  • 100 x 0.95 x $2.92 = $277.40