Blue-green algae Red Alert for stretch of Darling River at Wilcannia
19 NOVEMBER 2024WaterNSW has issued a Red Alert warning for high levels of potentially toxic blue-green algae for an area of the Darling River upstream of the Menindee Lakes, which includes the town of Wilcannia, as well as the sections of the river immediately upstream and downstream of Wilcannia. This Red Alert has been applied based on satellite imagery and visual on-ground observations.
The Red Alert warning applies only to untreated water at the above location and will remain in place until monitoring and test results confirm that the risk is sufficiently diminished. People should not consume untreated water from this section of the Darling River, and prevent pets and livestock from entering and drinking this water.
Wilcannia is fitted with dual-reticulated water supply and residents should be mindful that untreated water taps that source water directly from the river will also be affected by potentially harmful algae and therefore should also not be used for drinking and recreational use by stock, pets and humans.
Stock and domestic water users on this section of the Darling River should seek alternate water supplies.
People should avoid recreational activities such as swimming, water skiing, canoeing and any other activity that brings them into contact with this waterbody until the red alert warning is lifted.
Potentially toxic blue-green algae may cause gastroenteritis if consumed, while contact can cause skin and eye irritations. Consumption of water containing algal toxins may cause liver damage and other health problems. Boiling the water does not remove algal toxins.
People should not eat mussels or crayfish from red alert warning areas. A precautionary approach to eating fin fish from red alert warning areas is advised. Any fish caught should be cleaned and washed thoroughly in uncontaminated water; the internal organs should not be eaten. Avoiding fishing during a bloom is the best way to minimise risk.
People who suspect they have been affected by blue-green algae should seek medical advice.
Blue-green algae is naturally occurring and can reproduce quickly in still or slow-flowing water when there is abundant sunlight and sufficient nutrients.
Visit the local council or local water utility websites for information about the management of blue-green algae risks in the nearby treated drinking water supplies. Updates and information about blue-green algae blooms and red level warning areas can be obtained by visiting waternsw.com.au/algae
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