Katherine’s PFAS water treatment plant finally ready for action — but more will follow, experts warn

In a small remote town in the outback, a multi-million-dollar mega facility shipped in from America will soon turn potentially toxic drinking water into some of the cleanest in Australia.

It is the largest to be built so far and one of the first, but experts and activists say many more will be needed as Australia begins to deal with PFAS contamination.

A few years ago, residents of Katherine received the alarming news that the water they had been using was contaminated by a group of human-made chemicals known as PFAS, which some experts say are linked to cancers and other serious health concerns.

Between 1988 and 2004, during firefighting training at the Tindal RAAF Base, PFAS leaked into the Katherine River and spread kilometers through the highly connected aquifer below.

The government advised against eating fish caught from the river, the local swimming pool was closed, bore-reliant properties surrounding the base were delivered bottled water by Defense and residents lined up for blood tests.

A major study on the health effects of PFAS and a landmark class action were launched and an interim water treatment plant was brought in, but its size left many in fear the clean water would run out.

Liam Early says the plant will be open for business in the second half of the year.(ABC Katherine: Roxanne Fitzgerald)

Since then, residents have been clinging to the promise Australia’s largest PFAS water treatment plant would be built and after years of delays it has been confirmed the facility will be completed by August at the latest.

Senior project manager at Power and Water Corporation Liam Early said it would deliver “very high-quality water,” and agreed it would likely be the first of many needed across Australia as the nation began to grapple with the enormity of PFAS contamination.

“PFAS is a problem around Australia in a multitude of places,” he said.

A smiling woman with her hair pulled back tightly.
Suzie Reichman says more PFAS water treatment plants will be needed if more contaminated sites are found.(Supplied: Suzie Reichman)

‘The more we look, the more we’re finding’

Associate professor Suzie Reichman, an expert in pollution science at the University of Melbourne, said the sticky substances were known as “forever chemicals” because of their persistence in the environment and could be found in hundreds of everyday products like cosmetics, sunscreens and non- stick bread.

“Evidence is mounting that high concentrations can have a number of health impacts, including cancer,” Dr Reichman said.

“We haven’t definitively proven that in humans, but we also don’t know what concentrations cause [cancers].

“The Australian government has taken a very precautionary approach and we have very low thresholds for PFAS in the environment, including in drinking water.

“But because it wasn’t on people’s radars as a contaminant for so long, we’re now seeing it has gotten out into the environment … the more we look the more we’re finding.”

With an already high reliance on groundwater projected to rise across Australia as surface resources become less available due to climate change and droughts, Dr Reichman said treatment plants, despite their expense, would offer a good solution.

“We have already contaminated the environment with PFAS, and if it’s the only source of water, the solution to keep it safe for people and stock … is to clean it up,” she said.

A woman with blonde hair wearing a dark suit with a floral design stands in front of some trees.
Erin Brockovich says PFAS is shaping up as the most pressing groundwater contamination and food supply chain issue ever seen.(Triple J: Timothy Swanston)

Issue unprecedented, Brockovich says

Erin Brockovich said filtration systems were being installed across the US, where PFAS had turned up in the water supplies of communities across the country.

“I’m currently working on this issue in Maine where we’re looking at all of the organic farming being destroyed,” she said.

“It’s in the cattle, it’s in the chicken eggs, it’s in the aquifer, it’s in people’s [bore] wells.

“It’s happening here in California, it’s already happened to Alabama — it’s happening everywhere in Michigan.

A sign for a fire training ground near Tindal Airforce base warning of hazardous material.
PFAS chemicals were used in firefighting foams at Defense bases until the early 2000s.(ABC News: Jon Daly)

Ms Brockovich said a massive effort at the local, state, and federal level had begun to address PFAS including installing filtration systems on bore wells.

She said, after a slow start, the US was finally taking note of science and research that showed PFAS was widespread and dangerous.

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