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Waste Water


Every day, millions of litres of raw sewage from homes and industry—peaking at around one million litres per hour by mid morning—is sent to the Orange Waste Water Treatment Plant (WWTP) for treatment. This water contains a variety of organic and inorganic matter that makes it harmful to health if left in its raw state.


At the WWTP, after four stages of treatment, the resulting water can again be used by industry or returned to the Macquarie River system via Blackmans Swamp Creek after meeting strict environmental standards.

Currently Orange's treated effluent is used by Cadia Valley Operations, to supplement fresh water extraction from the Lachlan Valley.

You can view the treatment process in the Wastewater and Orange booklet below.


Wastewater and Orange booklet