
Swimming in Port Phillip Bay is a favourite summer activity for many Brighton and Bayside pet owners. While a paddle or swim can be great exercise for dogs, it’s important to be aware that water quality in the bay can change - particularly after rainfall.
Victoria’s Environment Protection Authority (EPA) regularly monitors beach water quality and issues public ratings to help people make informed decisions about swimming.
Beach water is generally rated as good, fair or poor, depending on pollution levels. After heavy rain, stormwater runoff can carry contaminants into the bay, temporarily reducing water quality.
When water quality is rated as fair or poor, swimming - for people and pets - may carry a higher risk of gastrointestinal illness or skin irritation.
· Check water quality before you go Look up local beach water quality updates before letting your dog swim.
· Avoid swimming after heavy rain It’s best to wait a day or two after significant rainfall before allowing water contact.
· Rinse after swimming Rinsing your dog with fresh water after a swim helps remove salt, sand and potential contaminants.
· Watch for signs of illness If your pet develops vomiting, diarrhoea, lethargy or skin irritation after swimming, contact your vet.
While swimming itself can be enjoyable, beaches can present other risks for pets:
· Bluebottles Bluebottle jellyfish are common along Victorian beaches during warmer months. Dogs that sniff or step on bluebottles can be stung, causing pain, swelling and irritation to paws or mouths.
· Puffer fish Occasionally washed up along the shoreline, puffer fish are highly toxic if eaten and can be fatal to dogs. Pets should be kept well away from them.
· Dead fish and debris Decaying marine life and debris can carry bacteria or toxins that may cause gastrointestinal illness if ingested.
· Fish hooks and fishing line Hooks and discarded line pose a serious injury risk to paws, mouths and throats.
· Broken glass and sharp objects Glass and sharp debris can be hidden in sand and cause painful cuts to paw pads.
Beach rules vary depending on location and time of year. Some areas allow dogs off-leash at certain times, while others require dogs to be on lead or prohibit dogs entirely. Following local council signage helps keep pets safe, avoids fines and ensures beaches remain accessible for everyone.
Before visiting, it’s worth checking current dog access and leash regulations for your chosen beach.
Living in Brighton and the Bayside area means easy access to the bay year-round. Staying informed about water quality helps ensure beach time remains a safe and enjoyable experience for both pets and owners.
If you’re ever unsure whether swimming conditions are suitable for your dog, our team at Middle Brighton Vet is happy to offer guidance.

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