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Water
Environmental Performance

Water usage and discharges

Water Usage

  • The primary use of water at ANSTO is the OPAL cooling water circuit, which typically accounts for ~70-80% of town water consumption. This water needs to be of a sufficiently high quality to prevent corrosion and scaling of the secondary cooling system, necessitating the use of town water. The higher water consumption in FY2022 compared to the previous year was due to OPAL operating ~ 1.5 months longer, subsequently requiring more water for cooling.  

  • Town water is also essential for other purposes across the campuses, including use in chiller and air conditioning units, laboratories and general staff consumption. 

  • ANSTO has installed rainwater tanks with a capacity of about 275,000 L. These are primarily used to irrigate gardens, the sports field and for some areas that use rainwater for operational activities. 

  • ANSTO is investigating options to capture and better utilise rainwater through future developments at its campuses. 

Water Usage and Discharge (Detailed data)

Water usage

Units

2019-2020

2020-2021

Change on previous year (%)

Town water consumption

m3

271,898

327,242

20

  m3/FTE 201 245 22

Wastewater Discharged to Sewer

m3

88,785

118,306

33

 

m3/FTE

75.5

101

34

 

Total Town Water Consumption
Total Town Water Consumption for three campuses FY2018 - FY2022
Relative Town Water Consumption
Relative Town Water Consumption FY 2018 - 2022

Wastewater

Higher than average rainfall in FY2022 has resulted in higher volumes of rainwater entering ANSTO’s aging sewer network when compared to previous years. While ANSTO has actively been working to rectify these stormwater ingress issues, opportunities for improvement continue to be identified and prioritised. 

Waste to Sewer (Lucas Heights only)
Wastewater to Sewer - Lucas Heights only FY 2018 - FY2022

Legend

kL kilolitre (1,000 litres)
FTE Full-time staff equivalent attendance
m3 cubic metres