Follow the directions of your Water Risk Management Plan. 
If you need more help see these links


Enhealth Guidelines

https://www.health.qld.gov.au/__data/assets/pdf_file/0030/444873/national-enhealth-guidelines.pdf

Public Health (Water Risk Management) Amendment Bill 2016

https://www.legislation.qld.gov.au/Bills/55PDF/2016/B16_0004_Public_Health_(Water_Risk_Management)_Amendment_Bill_2016.pdf

Queensland Health Resources

https://www.health.qld.gov.au/public-health/industry-environment/disease-prevention-control/legionella

Centers for Disease Control and Prevention

https://www.cdc.gov/legionella/


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