Some businesses may require a trade waste meter to measure trade waste discharge quantities. This will be outlined in each Trade Waste Permit.
A trade waste meter is a meter installed to measure the volume of trade waste discharge to the sewer and may be:
- a water meter which measures the potable water entering the trade waste generating area or
- a wastewater meter which measures the volume of trade waste discharged to the sewer.
Trade waste meters should meet the Queensland Plumbing and Wastewater Code and WSA 15-2014 Trade Waste Metering Code of Practice and be placed in a location that is accessible and does not poses a risk to the person reading the meter.
Trade waste meters are not required for all business. If a trade waste meter is required, details of the meter installation and maintenance requirements will be a condition of the Trade Waste Discharge Permit issued for the business.
Grease arrestor loadings
Grease arrestor loadings are calculated using the grease arrestor sizing guidelines (PDF 132KB).
Find out more about trade waste pre-treatment facilities installation requirements via a trade waste pre-treatment facilities installation requirements fact sheet (PDF 374KB).
The cleaning frequency of these pre-treatment facilities will be specified in the Trade Waste Approval.
Please note: The cleaning contractor must supply a service record for each service carried out to Unitywater's Trade Waste team. This information must be in a format acceptable to Unitywater, preferably digital.