
A fifth-generation Tasmanian farm is at a standstill after sewage flows at three times design capacity and PFAS contamination left waterways unusable. Regulators do not oversee the plant.
Kate Tucker's fifth-generation family farm in northern Tasmania is at a standstill after contamination from sewage and PFAS chemicals left its waterways unusable for stock or crops.
The 160-hectare property outside Launceston, called The Springs for the water that was once its greatest resource, now faces what Tucker called "incredibly stressful" conditions. For the first time in five generations, the farm is not operating.
A nearby lagoon-based sewage treatment plant owned by TasWater receives all waste from the Launceston Airport, nearby households, and the TRANSLink industrial precinct. The plant was designed to process fewer than 100 kilolitres of sewage a day. Documents show it received an average of 329 kilolitres a day in 2024-2025, more than three times its design capacity. Treated waste flows into a creek on the property and then into the North Esk River.
Tucker worries the high flow reduces the waste's settlement time and thus the treatment quality. TasWater chief scientist Graham Hawke said the plant's treatment does not involve screening or grit removal but relies on "floating wetlands" and UV light from the sun. He called it "a bit like a natural compost heap, but underwater."
Hawke said TasWater's priority was investing in larger treatment plants while using innovation to improve smaller ones. The plant is not due to be decommissioned for about a decade, after which sewage would be redirected to the Evandale plant.
The Western Junction plant is one of 33 across Tasmania classified as level one, designed to treat under 100 kilolitres per day. The state's Environment Protection Authority does not regulate these facilities, even when they receive far more than that. Regulation falls to local councils. The Northern Midlands Council has never issued the plant an environmental protection notice.
"These environmental protection notices, they're a critical tool for holding polluters to account," said Lucy Tremain, freshwater campaigner for Environment Tasmania. Without one, she said the regulations were "oblique."
Northern Midlands Mayor Mary Knowles said the council recently engaged an environmental consultant and may issue Western Junction with a notice, but the treatment volume now exceeds the council's expertise and resources.
TasWater's own 2024-2025 Environmental Report shows many of the plant's discharges would have been deemed non-compliant if the EPA regulated it. The report classifies Western Junction as one of four "high risk" plants among 11 rated "medium risk" out of 33 level-one facilities across the state.
Hawke said TasWater has monitored the plant monthly since 2014. Tucker said she had only received reports from 2023-2024 and 2024-2025.
"There's no pressure on TasWater to really do anything dramatic with it," Tucker said.
Separately, the property has tested positive for PFAS chemicals linked to human health issues. Tucker said the chemicals were found in the farm's water, making it unusable for the family's quarry or for farming. Air Services Australia first alerted the family in 2022. Tucker believes the chemicals may have flowed from the Launceston Airport, used for firefighter training historically. Airservices said it completed PFAS remediation measures at the airport last year and is finalising a detailed investigation. PFAS has also been detected at the sewage treatment plant; Hawke said TasWater is testing the sewer network for potential sources.
Tucker's first priority is getting the Western Junction plant moved up the decommissioning schedule. "And then we're just left with the PFAS issue, which we will have to work through," she said.
The family is using some land for agistment, with water from TasWater mains. Tucker said cleaning up the waterways would allow more farming options. If nothing happens, she said the family would have to start objecting to future development.
"Which goes against every grain of our body," she said.
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