The Pimpama Recycled Water Treatment Plant is the only treatment plant in the Allconnex Water region which produces Class A+ recycled water. Class A+ recycled water is the highest quality of recycled water for non-drinking water purposes.
Rigorous monitoring, testing and quality assurance systems are in place to meet strict environmental and public heath requirements.
Class A+ recycled water undergoes processes additional to traditional wastewater treatment. The treatment process steps are outlined below.
Treatment Process Steps
| 1 |
Pre-treatment |
The wastewater is filtered - large solids and grit is removed |
| 2a |
Biological treatment |
Bacteria grow and work to remove nutrients from the wastewater |
| 2b |
Clarification |
Solids (excess sludge) and floating material (scum, fat, oil) is separated from the wastewater |
| 3 |
Media filtration |
Clarified water is filtered though beds of coal to reduce nutrient concentration and suspended solids |
| 4 |
Chlorine contact tanks |
The water is put in contact with chlorine to kill bacteria and pathogens |
| 5 |
Ultra-filtration |
Recycled water passes through ultra-filtration membranes of synthetic fibres with pores a fraction of a millimetre in diameter - small particles are removed |
| 6 |
Ultra-violet disinfection |
Ultra-filtered water flows past a number of high intensity ultra violet reactors, which destroy microbiological pathogens of all sizes |
| 7 |
Chlorination |
Final disinfection before distribution of Class A+ recycled water to the network |
For more information on the treatment process view the 
Class A+ recycled water treatment process brochure (449kb).
For more information on the product visit Class A+ recycled water.