Legionella Testing, Sampling, Monitoring & Water Hygiene Consulting
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Sources of Legionella

Sources of Legionella

The spread of legionella bacteria typically occurs through water systems, with illness occurring after individuals have inhaled aerosols that have been contaminated with the Legionella bacterium.

Naturally occurring in water and soil, the Legionella bacterium is widely distributed in water systems and certain conditions tend to promote and propagate the growth of Legionella:

  • Water ph levels between 5.0 and 8.5
  • Sitting or stagnant water
  • Temperatures between 20° and 50° C with optimal growth occurring between 35° and 46°C
  • Micro-organisms including Pseudomonas, flavobacteria and algae, which supply essential nutrients for the growth of Legionella or harbor the organism

Aerosols that can be inhaled may come from a variety of water sources:

  • Water distribution systems of large buildings (hotels, hospitals, ect.)
  • Cooling Towers
  • Showers
  • Spas
  • Commercial Ice Machines
  • Body Misters
  • Potting Soil
  • CPAP Machines



About Us

H2O Analytics is a premier legionella testing, sampling, monitoring and water hygiene consultancy offering independent, third-party sampling and consulting to many industries across Southern Ontario. Ensuring honest, verifiable and defendable results is what we do best. Our team of experienced and professional consultants work with each customer in an effort to create the safest water systems possible.

Dedicated to the specialized sampling and testing needs of Commercial and Rental Properties, Hotel/Hospitality facilities, Nursing and Care Homes, Public & Private Schools, Hospitals, MD & Dental practices and surgery facilities, we have the experience and knowledge you can trust. Proudly offering Legionella Sampling, Legionella Testing, Monitoring & Management Plans, as well as on-site training and prevention seminars.

Contact us today.... We can help reduce your risk and liability!

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    Service Areas

    From our locations strategically located throughout Southern Ontario (Toronto, Mississauga, Niagara, Kitchener, London & Barrie) our consultants are proud to service all areas listed below...and then some! If you don't see your city or town listed, just give us a call to check...I'm sure we're not too far away to help!

    Acton, Ajax, Aurora, Barrie, Brampton, Brantford, Burlington, Caledon Region, Cambridge, Cobourg, Collingwood, Fergus, Fort Erie, Guelph, Haldimand County, Halton Hills, Hamilton, Ingersoll, Kawartha Lakes, Kitchener, London, Markham, Midland, Milton, Mississauga, Muskoka District, Newmarket, Niagara Falls, Niagara Region, Oakville, Orangeville, Orillia, Oshawa, Peterborough, Richmond Hill, St. Catharines, St. Thomas, Stratford, Tillsonburg, Toronto (GTA), Wasaga Beach, Waterloo, Woodbridge, Woodstock.