Liquid waste generated by industry, small business and commercial enterprises is referred to as trade waste. It is illegal to discharge wastes, other than domestic sewage, into the sewerage system without approval from Council.

Trade waste may have an organic strength many times that of domestic sewage and may overload the treatment facility. Trade waste may also contain a variety of exotic substances such as heavy metals, organic solvents and chlorinated organics which sewerage systems are not designed to treat.

Council’s policy is to accept biodegradable waste into the sewerage system provided that the system is of adequate capacity to effectively collect, transport and treat the waste. As trade waste imposes an additional load on the sewerage system, trade waste charges apply and the operator is required to obtain a permit from Council.