Legionella

Legionella is a water-borne pathogen best known for Legionnaires’ disease, although it also causes Pontiac fever and Lochgoilhead fever. It’s contracted by inhaling small drops of water, (aerosols), not by drinking. ProEconomy offer advanced Legionella control through our copper silver ionisation system, The Orca.

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Environment

Legionella multiplies between 20 and 45°C. The current recommended temperature for hot water systems is 55°C. However, there’s increasing scientific evidence that the water borne bacteria can survive above this level. Lower temperatures make it less active while long-standing water gives it more time to multiply.
Deposits such as rust, scale and biofilm can protect Legionella from a range of measures introduced to control them. Reference

Incidence

Not everyone will catch Legionnaires’ disease. Groups especially at risk include the elderly, newborns, heavy smokers, drinkers, people suffering from lung, heart or kidney disease, diabetics and those who are immune-compromised, e.g. transplant patients. Reference

Health and Safety Executive, (2014) HSG274 Part 2: The control of Legionella bacteria in hot and cold water systems, para. 2, p.3

“There is a reasonably foreseeable Legionella risk in your water system if:

  • water is stored or recirculated as part of your system
  • the water temperature in all or some part of the system may be between 
20–45 °C;
  • there are deposits that can support bacterial growth, such as rust, sludge, scale and organic matter;
  • it is possible for water droplets to be produced and, if so, if they can be dispersed;
  • it is likely that any of your employees, contractors, visitors etc. could be exposed to any contaminated water droplets.”

Legionella Control With The Orca

At ProEconomy, we offer proven water treatment with our Orca copper silver ionisnation system. Over the past 25 years, our water treatment system has never failed to control Legionella at industrial or commercial sites worldwide.

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Legionella Monitoring With Tetras

Our newly developed water management system, Tetras, provides an advanced water sampling and management service to detect any water quality issues.

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Health and Safety Executive, (2014) HSG274 Part 2: The control of bacteria in hot and cold water systems, para. 2, p.3

“There is a reasonably foreseeable risk in your water system if:

  • water is stored or recirculated as part of your system
  • the water temperature in all or some part of the system may be between 20–45 °C;
  • there are deposits that can support bacterial growth, such as rust, sludge, scale and organic matter;
  • it is possible for water droplets to be produced and, if so, if they can be dispersed;
  • it is likely that any of your employees, contractors, visitors etc. could be exposed to any contaminated water droplets.”

ProEconomy's reputation speaks volumes and the Orca system is highly regarded by those who have installed it.

 
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