Pollution levels in Derwent and Florentine headwaters

A scientific report for Environment Tasmania shows high levels of pollution in the headwaters of the Derwent and Florentine rivers, downstream from two salmon hatcheries. It reveals very high nutrient levels in both the outfalls and downstream rivers, ranging from 5 to more than 128 times upstream levels. Significant levels of fouling were also observed on the rocks and river bed downstream. Coliform and E coli bacteria levels in one outfall were extremely high, and there was a strong odour and visible slick in the area.

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