Picton Wastewater Scheme and Water Recycling Plant

To service new connections and growth in the area, we’re upgrading Picton Water Recycling Plant.

Work started in mid 2016 and should be completed in early 2019. 

Green pasture grass with rural hills behind in background

Recycled water is used to irrigate up to 175 hectares of pasture land at Picton Farm.

About the project

We've considered the short and long term management strategy for Picton Water Recycling Plant and Picton Farm.

To service new connections and growth in the area, we’re upgrading the Picton Water Recycling Plant. After the initial site work, construction started in mid 2016. We expect to complete the work in early 2019.

Upgrades to Picton Water Recycling Plant

The Picton Wastewater Scheme currently includes:

  • pipelines and pumping stations
  • Picton Water Recycling Plant, which is designed to treat an average of 2.7 million litres of dry weather wastewater flows a day
  • the use of high quality recycled water at Picton Farm to irrigate up to 119 hectares of crops 
  • precautionary discharge of excess recycled water to Stonequarry Creek.

Picton Water Recycling Plant treats wastewater that’s been used in about 3,800 homes and businesses in Picton, Tahmoor, Thirlmere, Bargo and Buxton.

We're constructing extra facilities at the plant to treat up to four million litres of wastewater a day. This includes:

  • two additional intermittently decanted aerated lagoons (IDALs)
  • new inlet pipes and infrastructure to deliver wastewater flows to the existing and new IDALs
  • two additional sludge lagoons
  • a new chemical dosing unit (CDU) for pH correction
  • a new pipeline (about 275 metres long) to transport chemicals from the CDU to the Western Dam
  • a new odour control system
  • upgrades to electrical and monitoring control systems
  • improvements to site and road drainage.

All construction work will be contained within the property boundaries of Picton Water Recycling Plant and Picton Farm. There will be minimal impacts on the environment and local community during construction and commissioning of the new infrastructure.

See the location and site maps for more detail about the proposed work.

We prepared an Environmental Assessment for the proposed upgrades, which was on public display from 10 December 2014 to 2 February 2015. During this time, the local community commented on the proposal.

We provided a report to the Department of Planning and Environment to respond to the submissions received during the exhibition period. The proposal was then approved in June 2015. 

Read the report and the approval documents on the Department of Planning and Environment website.

Learn more about the project by calling us on 13 20 92.

Long term management strategy

A Community Reference Group has been put together to provide input to the long term management strategy for the increased volume of wastewater. The group includes local residents, businesses, councils, industry and river users.

Some of the options being considered include:

  • using recycled water at farms and businesses, and to irrigate sports fields, flush toilets and irrigate gardens at residential properties
  • transferring excess recycled water flows to other treatment plants like West Camden or Glenfield
  • installing wetlands 
  • releasing surplus recycled water to Stonequarry Creek or the Nepean River.

Construction started in mid 2016. We expect to complete work in early 2019.

Proposed construction timeline

December 2014 to January 2015 Environmental Assessment on display
August 2015 to mid 2016 Detailed design work
Mid 2016 to late 2018 Construction
Late 2018 to early 2019 Commissioning of the new infrastructure


To view the Environmental Assessment, please visit  NSW Department of Planning and Environment.
 To learn more call us on 13 20 92.