News & Media releases

Algal bloom update no. 5

The Department of Health (DoH) has extended its warning regarding the toxic Alexandrium algal bloom in the Swan and Canning rivers.  DoH is advising people not to eat fish, crabs or shellfish collected from within the following waterways:

Swan River – from Pelican Point, Crawley to the South of Perth Yacht Club, Applecross and upstream to Middle Swan (Reid Highway) Bridge, Middle Swan (this includes the commonly known areas of Como Jetty, Matilda Bay, Perth Waters, Elizabeth Quay, Barrack Street Jetty, Claisebrook Cove, Maylands Yacht Club, Ascot Waters, Hind Reserve, Riverside Gardens, Garvey Park, Sandy Beach Reserve, Point Reserve, Kings Meadow, Fish Market Reserve and Woodbridge Riverside Park).

Canning River – from the South of Perth Yacht Club and upstream to Kent Street Weir (this includes commonly known areas of Canning Bridge, Mt Henry Bridge, Salter Point, Shelley Bridge, Riverton Bridge, and Castledare).

A map of the impacted area is attached. 

Alexandrium toxins can cause paralytic shellfish poisoning and cooking will not destroy these toxins.

Please see the latest DoH media statement here.

The Department of Biodiversity, Conservation and Attractions continues to conduct weekly water quality monitoring at an increased number of sites to track the extent of the bloom. We are also testing mussels and crabs for the Alexandrium toxin. DoH and local riverfront councils have arranged for health warning signs advising against crabbing, shellfish collection and fishing to be erected at key riverfront locations including jetties, boat ramps and key accessible foreshore areas within the affected region. It should be noted that swimming and other aquatic recreational activities on the Swan and Canning rivers are not impacted by the algal bloom, but as a general rule swimming should be avoided in areas of discoloured water.

Further information is provided in detailed FAQ’s available at https://www.dbca.wa.gov.au/science/riverpark-monitoring