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Quarry Lake water quality

Find the latest information on water quality at Quarry Lake in Ferntree Gully.

Current water quality 

It is not safe to swim, fish or let your dogs enter the water at Quarry Lake until further notice.

Routine water quality testing has detected the presence of bacteria known as Enterococci at levels that can pose a risk to human and animal health.

Signage has been erected at Quarry Lake Reserve warning visitors not to swim, fish or let their dogs enter the water until further notice.

About Enterococci

Enterococci occur naturally in plants, sand, soil and sediments but higher enterococci levels may indicate faecal contamination. Sources could include stormwater runoff, sewage, dog poo or wildlife waste. 

Enterococci are typically not considered harmful to humans. Still, their presence in the water may indicate other disease-causing bacteria, viruses, and protozoa which can make swimmers and people who eat fish from the water sick.

Investigations are underway to identify possible sources of contamination.

Medical attention

If you have experienced any of the following symptoms after swimming in or eating fish from Quarry Lake, please seek medical attention:

  • diarrhea
  • abdominal pain and cramps
  • fever 
  • respiratory infections
  • ear infections
  • skin rashes.

Updates

Testing will be conducted weekly until the water quality returns to safe levels.

Check this web page for updates.

This page was last updated on 1 February 2024.

Need help?

Contact us and we will come back to you.

Or call our Stormwater team on 9298 8000.

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