The $60 million Dissolved Air Flotation, Filtration Water Treatment Plant at Karangi was officially opened on 9 June 2009. The DAFF is not open to the public, but guided tours for school or community groups can be arranged by telephoning the Coffs Harbour Water Treatment Plant Manager on (02) 6648 4498.
Location of Plant
The DAFF Plant is located on Upper Orara Road, Karangi. The location of the plant was chosen following an extensive selection process that covers social, environmental and financial issues. Some of the determining factors for the final site were that it needed:
- to be in close proximity to the existing pipeline from Karangi Dam to the Red Hill Balance Tanks;
- to have specific elevations in order to minimise energy usage;
- to allow as much building setback from boundaries in order to reduce the impact on neighbours;
- to require little or no native vegetation removal; and
- to have minimal environmental impact.
Design and Construction
Risk Assessment and a Hazard and Operability Study (HAZOP) was conducted during the design to ensure that the right process was selected for our particular circumstances.
In addition, a Hazard and Critical Point (HACCP) study of the whole system, from catchment to tap, was also be carried out to ensure that the correct process controls are in place and that preventative measures are operating effectively.
This is in line with the procedures outlined in the Australian Drinking Water Guidelines for new Water Filtration Plants.
Operational and Environmental Documents
Hazard and Operability Study (HAZOP) Report
Operational Environmental Management Plan
Operations Emergency Planning Management Plan
Operations Safety Management Plan
Complaints regarding the plant can be directed to Coffs Harbour City Council on 02 6648 4000 or email us.
Karangi WTP OEMP Complaints Register
Water Treatment Plant process description
Water Treatment Plant process diagram
Award Winning Coffs Infrastructure Alliance (CIA)