Work on the Manilla Water Supply Upgrade is continuing with construction of the new Manilla Water Treatment Plant and I am excited to update you about the latest progress.

The civil, electrical and mechanical works at the treatment plant site are very near to complete with the installation of street lighting around the plant to be finalised in the near future. Roadworks on Reservoir Rd, including the driveway in to the plant, and Landscaping has commenced and will be the final civil works completed at the site in the next month.

Once the chemical pipelines around the site have been connected the plant will enter into the commissioning process, starting with the electrical testing and operation checking of all the small pumps, flow switches, valves, and flow meters at the plant.

The next stage will be checking all equipment and systems are able to be operated together demonstrating the entire system will be able to function according to specifications, initially by recirculating water around the plant and then by using raw water and introducing the treatment process chemicals.

In order to complete the works in a known timeframe the raw water pipeline crossing at the Namoi River Weir (to source water from the Manilla River) has been changed from being attached to the wier to a horizontal under bore under the Namoi river. A directional drilling team has completed works in early June, now ensuring no risk to the Raw water pipeline during future large river flow events. This however has extended completion timeframes slightly with works now due for completion in September for the Water Treatment Plant and to January for the Namoi Pump Station at Chaffey Park.

Ian Cross

Project Manager

Manilla Water Supply Upgrade