North Head Biosolids Upgrade Project

The North Head Water Resource Recovery Facility (previously known as the North Head Wastewater Treatment Plant) serves over one million Sydneysiders: from Seven Hills in the west, Yagoona in the south, and Ku-ring-gai and Collaroy in the north.

We’re building two new digesters and upgrading equipment to improve how we process biosolids at our North Head Water Resource Recovery Facility (previously known as the North Head Wastewater Treatment Plant).

The biosolids project will:

	Reduce odour Improving the quality of the biosolids will make them less smelly. This means less odour as our trucks transport biosolids from North Head to farms in regional NSW.		Contribute to a circular economy Recovering biosolids for reuse in agriculture helps reduce waste to landfill and contribute to a circular economy.
	Produce better quality biosolids Biosolids are used in agriculture to fertilise soil. Better quality biosolids will ensure we can continue to reuse 100% of the biosolids created.		Increase processing capacity Two new digesters will increase sludge processing from 40 to 70 tonnes per day by 2043.
	Improve reliability In the long run, the new digesters and upgrades to sludge tanks will ensure the ongoing reliability of the facility