People warned to avoid polluted New South Wales beaches after floods

Recent extreme wet weather conditions and flooding have seen stormwater pollution impact dozens of beaches and swimming sites across eastern New South Wales.

A Beachwatch spokesperson said floodwaters are still flowing into the ocean from the Hawkesbury River, turning the ocean brown from the Central Coast to Wollongong and up to 8km out to sea.

Beachwatch has urged people to avoid swimming if there are signs of pollution such as discoloured water and floating debris.

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"Swimming should be avoided for as long as stormwater and floodwater is present," a Beachwatch spokesperson said.

"The most obvious signs of stormwater and floodwater pollution are water discolouration as well as debris in the water and on the tide line."

Swimming in water affected by storm and floodwaters can expose swimmers to a number of dangers, including untreated sewage that carries viruses and bacteria which can lead to illnesses such as gastroenteritis, and ear and skin infections.

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People are also being warned of the risks of injury from hidden objects and other debris in the water.

Always check with lifeguards for the latest beach conditions.