The Merrimu WFP sodium fluoride system upgrade comprised the following elements:

• New fluoridation plant building, including a new electrical switchroom

• New sodium fluoride upflow saturator and day tank

• New sodium fluoride transfer pumps and dosing pumps

• New sodium fluoride dosing lines and injection point

• Modification to the existing treated water pipework to the Clear Water Storage tanks

• Modification to the existing service water supply pipework and new water softener

• New waste transfer pump and waste collection tank

• New safety showers (including eye wash stations) and service water hose reels

• New background (raw water) fluoride analyser

• New sample line to the existing treated water fluoride analyser

• New CWS feed flow meter

• Electrical and control system integration works

• New suction pipework to the Toolern Vale pumps

• New pipework to allow the 5ML Treated Water tank to be drained and diverted to Djerriwarrh Reservoir

• Modifications to the existing site road for chemical delivery and pedestrian access

• A new Allen Bradley MicroLogix 1400 PLC system. The new PLC will have an ethernet connection to the existing SCADA network switch located in PLC Panel within control room 2. The connection shall be fibre optic between buildings.

Value: $2.2M