2019 Water Balance—All Locations
Million cubic meters

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2019 Water Balance—All Locations
Million cubic meters

Category 1 water is of a high quality and suitable for most purposes with little or no treatment. Category 2 water is of a medium quality and suitable for some purposes, such as irrigation. Category 3 water is of a low quality and suitable for limited purposes without significant treatment. Categories 1 and 2 are equivalent to the ICMM High Quality definition, and Category 3 is equivalent to the ICMM Low Quality definition. Groundwater includes produced water, which is water entrained in ore. Consumption consists of evaporation and entrainment. The 2019 change in storage volume was -3.9 million cubic meters, and 164 million cubic meters were recycled/reused in the process. The sum of categories may vary from the totals due to rounding.
Water Withdrawn Water Discharged
Category 1 Category 2 Category 3 Total Category 1 Category 2 Category 3 Total
Surface Water 35.4 655.5 19.6 710.6 5.3 649.1 0.8 655.2
Groundwater 1.9 17.3 3.1 22.4 0.0 6.9 2.6 9.5
Seawater 0.0 0.0 65.1 65.1 0.0 0.9 89.6 90.5
Third-party Water 3.5 6.5 0.9 10.9 0.1 0.0 0.1 0.3
Consumption - - - - 5.6 13.8 38.0 57.4
Total 40.8 697.4 88.8 809.0 11.0 670.8 131.1 812.9

Case Studies

    Nature Does the Work

    Our Intalco Works aluminum smelter let nature help decrease the site’s stormwater runoff and improve the quality of the water in the process.


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    Restoring Waterways, Revitalizing Communities

    Three environmental organizations + Alcoa Foundation funding = The restoration of three rivers + one estuary. This winning equation is positively impacting the economic, environmental and social health of numerous communities across the Peel-Harvey Catchment in Western Australia.


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