About half of Port Phillip has been could be unsuitable for swimming as Victorians bake for the fourth consecutive day.

The EPA’s Cleaner Yarra & Bay watch website issued a forecast warning to people considering taking a dip to cool off at more than 20 popular bay beaches to reconsider doing do because of potential water quality concerns.

The areas include: St Kilda, Port Melbourne, Queenscliff, Mordialloc, Mentone, Beaumaris, Altona and Williamstown.

The warning has been extended to half of Yarra River, also because of water quality issues.

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The areas include urban areas including Kew and Heidelberg and the rural section, which includes Healesville.

The EPA has warned people not to swim near stormwater or river mouths up to 48 hours after heavy rain.



