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 Council on (02) 6648 4000.
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(PDF, 124KB)
Operational Environmental Management Plan(PDF, 12MB)
Operations Emergency Planning Management Plan(PDF, 1MB)
Operations Safety Management Plan(PDF, 13MB)
Compliance Tracking Program(PDF, 5MB)
Complaints or Inquiries
Complaints or inquiries regarding the plant can be directed to Coffs Harbour City Council via:
Telephone:02 6648 4000
Postal Address: Locked Bag 155, Coffs Harbour NSW 2450
Karangi WTP OEMP Complaints Register Karangi-WTP-OEMP-Complaints-Register.pdf(PDF, 29KB)
Water Treatment Plant Approval(PDF, 3MB)
Water Treatment Plant process description(PDF, 61KB)
Water Treatment Plant process diagram(PDF, 447KB)