Central Coast Council is advising against swimming at five Lakes’ beaches after testing has found elevated levels of bacteria in the water.

Council discover the bacteria in Summerland Point, Gwandalan, Canton Beach, Chain Valley Bay and Mannering Park, following routine testing this week.

Signs have been erected at each location, warning against swimming until further testing can be completed.

The unusually long dry spell and increased bird activity particularly in the shallows at the moment, coupled with the fact that there has also been little wind in these areas, which would normally whip up wave movement and water churn, has resulted in a higher concentration.

Given the Coast is not expecting to see any significant rain in the short term, residents and visitors alike need to be mindful of where they can swim.

All coastal beaches have been tested and have been declared fine for swimming.

Residents and visitors are advised to swim between the flags at one of the patrolled beaches.