In a striking moment of institutional dysfunction, the Western Australian government locked the very agency responsible for protecting Perth's drinking water out of the decision-making process for approving expanded mining operations near critical water sources. The result: a set of permissions that one expert after another warned would jeopardise the water supply for 2.3 million people.
Internal documents have revealed that Water Corporation moved to distance itself from a state decision to approve mining operations by Alcoa in the Darling Range in December 2023. This was not a voluntary retreat. The utility found itself systematically excluded from government proceedings as the Cook administration pressed ahead with approvals that its own experts rejected.
The fundamental question is straightforward: how can a government agency credibly oversee a mining operation when it deliberately freezes out the public servant body whose job it is to protect the asset at risk? This is not merely bad administration. This is institutional capture of the worst kind.
The experts spoke. The government ignored them.
Water Corporation advised that contamination of the water supply would be a certainty, and in October 2023, the Department of Water and Environmental Regulation rejected Alcoa's plan in its entirety. These were not abstract concerns or bureaucratic caution. They were grounded assessments from the agencies tasked with exactly this type of risk management.
Yet within weeks, the government inverted these positions. Alcoa would be given almost unlimited access to the forest south of Serpentine Dam, except for within one kilometre of the water's edge. Water Corporation board was told the bad news a week before Alcoa was allowed into previously forbidden high-risk areas. The utility was left with little ability to protect key assets, so management suggested work be done to build spare capacity before a dam was contaminated.
Let the reader absorb that last sentence: facing regulatory exclusion and a state approval they could not stop, the water utility's recourse was to plan for catastrophic contamination. This is what happens when oversight fails. Government does not eliminate the risk; it simply shifts who bears it.
The legitimate counterargument deserves hearing
Mining matters to Western Australia. Alcoa's growing dependence on Australia is reflected in a share price fall that followed regulatory delays to its plans to mine new forest tracts, with CEO William Oplinger highlighting the paramount importance of those pending approvals in a shareholders meeting. The company sustains thousands of jobs and contributes substantially to the state economy. A government can reasonably weigh these contributions.
But there is a difference between balancing competing interests and excluding the relevant expert bodies from the table altogether. A Department of Health committee on the protection of drinking water sources noted that the regulatory framework shifted the risk approach for Alcoa from preventative to a reasonable practical approach which is not consistent with Australian Drinking Water Guidelines. This was not a judgment call between two equally valid positions. It was a documented lowering of the safety standard itself.
What accountability looks like
The government will defend this decision on economic grounds. Investment in refineries and mining operations drives regional prosperity. But sound fiscal management cannot rest on institutional exclusion. When the agency responsible for drinking water safety is frozen out of decisions that affect drinking water safety, we have abandoned the basic procedural honesty that democratic governance requires.
Readers deserve clarity on what has occurred: expert agencies warned of risk; the government overruled them; and then it sidelined one of those agencies from ongoing oversight. This is not regulation. This is accommodation of a major industrial player at the expense of the transparency that allows the public to judge whether risks have been properly managed.
The Perth water system remains operationally sound today. But Perth's residents are now relying on luck and Alcoa's stated commitment to care, rather than on the institutional safeguards and independent expert oversight that should protect one of the state's most critical assets. That is a structural failure, not a policy choice. And it matters.