Hobart's largest wastewater treatment plant — next to the site of the proposed AFL stadium — has regularly breached environmental standards for discharging chemicals into the River Derwent, creating a "high risk" of toxicity.
The ongoing environmental problems with the Macquarie Point Sewage Treatment Plant were detailed in TasWater's business case for the plant's proposed relocation to Selfs Point, further up the Derwent, with more modern infrastructure.