Reports track sediment health at drainage sites
Released 13 Oct 2011
The Department of Water today released two reports commissioned by the Swan River Trust.
The reports, produced during the second stage of the Trust's non-nutrient contaminants program, focus on the ecological impacts of contaminants found in the estuary at Claisebrook and Bull Creek.
The types of contaminants found include polycyclic aromatic hydrocarbons (PAHs), organochlorine (OC) pesticides and metals (zinc, lead and copper) which are common in most urbanised estuaries, but can be toxic in high concentrations.
Sediments collected in the vicinity of Claisebrook and Bull Creek drain outfalls were tested for contaminants and impacts on four organisms.
The findings showed that concentrations of contaminants in filter feeding shellfish did not exceed the Australian and New Zealand Food Standard code.
The Department of Health has reviewed the findings and advised there is no risk to human health and that fish caught in the Swan River estuary are safe to eat.
The Swan River Trust and the Department of Water continue to undertake routine sampling - with a focus on nutrients and algal activity - to ensure the health of the Swan and Canning river system.
The reports are available on Department of Water website at these links, Ecotoxicological and bioaccumulation investigations of the Swan Estuary in the vicinity of Claisebrook and A preliminary ecotoxicological investigation of Bull Creek.
Contact: Peter Collins
Phone: (08) 6364 6848 / 0434 603 441