The Forum > Article Comments > An Australian population policy? > Comments
An Australian population policy? : Comments
By Max Rawnsley, published 5/12/2018How should a ‘population’ policy relate to our major urban and regional centres? Where is the public consultation?
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http://www.abc.net.au/news/2018-12-10/groundwater-bores-pulling-up-salt-water-off-kwinana-coast/10594444
Sea water sucked 1 kilometre inland as Kwinana bores placed under intense pressure
Groundwater bores are designed to draw fresh water out of the ground, but the pressure on bores has been so intense in some locations along Perth's south coast that the bores have begun pulling up salt water instead.
A Department of Water and Environmental Regulation report has found the amount of groundwater being extracted in the Kwinana industrial area was causing sea water from deeper underground to rise up and take its place.
Effectively it meant the sea water was being sucked back under the land, and once salt water moved into stores of fresh water the damage was difficult to reverse.
The department claimed the issue of sea water turning bores salty was the biggest problem facing groundwater users — residents, market gardeners and industry — along the coast.
Drawing more water from fewer freshwater bores not only increased the risk of more saltwater contamination, but also threatened to disturb decades-old contamination plumes laying dormant underground.
Water supply issues threaten industry expansion
The new recommended water plan affects about 300 water licence holders in the area.
"That doesn't mean that people who currently have water will have that water taken off them," Dr McHugh said.
"What it does mean is that going into the future there won't be any additional groundwater available for use."
That raised significant questions for industry in the Kwinana area, which was expected to expand significantly, almost doubling its water needs.
"Some say that the expansion is being crippled because future water supply isn't there for those companies coming into the place. And if it doesn't get fixed, that is correct," Mr Oughton said.
"Those companies that need water won't come here if they can't get water."