RECYCLED groundwater and storm water are being considered to top up Perth’s long term water supply as Water Corporation rolls forward desalination plant proposals.

As the environmental assessment for a desalination plant in Perth’s north reached its third stage, the utility flagged it was also starting to investigate more groundwater replenishment and storm water options.

In early May, WA’s Environmental Protection Authority (EPA) approved Water Corporation’s environmental scoping document for a potential seawater desalination plant in Alkimos.