The best way to mitigate the risk of Legionella bacteria is to maintain the cold water temperature below 20 Celsius which keeps the bacteria dormant. For hot water storage, the temperature should be above 60 Celsius so that the bacteria cannot survive.
Routinely taken from key areas of the system
Documented to highlight deterioration
Electronic or paper logbooks to suit your needs
A critical aspect of Legionella control is the maintenance of site assets that create aerosols, as it's the inhalation of Legionella bacteria that poses a risk to health. Showerheads are the perfect breeding ground for Legionella bacteria with temperatures between 35-45 Celsius and quite often a build up of scale and/or biological growth, providing a nutrient source for the bacteria. With this in mind, preventative maintenance must be routinely carried out.
It's not just showers that are affected. Other systems might include pressure washers, hot tubs, humidifiers, air conditioning units, sprinkler systems, car washes or even the garden hose.
Routine cleaning and disinfection quarterly, or at a frequency determined by the risk assessment
Recorded on site logbook
Regular flushing of little used outlets to reduce stagnation
Other areas that require routine monitoring and checks would include any installed water treatment plant. This might be filtration, UV sterilisation, water softeners or chemical dosing. We can provide these checks as part of a package or ad hoc as required.
Thermostatic mixing valves (TMVs) require checks to make sure they are operating as designed. These checks ensure that the TMV is not supporting legionella bacteria and also that the fail-safe mechanism is functional and prevents scalding in the event of a break in the cold water supply. They also require de-scaling & disinfection in certain circumstances.
We can cover other controls to suit your needs.
"Friendly, helpful advice. Very informative"
"Brilliant service today from Connor of PHX Water at The Anglers Inn. Full legionella risk assessment done with remedial actions. We’d highly recommend Connor and PHX Water"
"Great service. Assessment carried out efficiently and Connor gave us some good advice."
"We used PHX Water for a number of their services throughout multiple sites across our group, from Legionella risk assessments, tank cleaning and water sampling the service was excellent and we would highly recommend using pHX water. Thanks to the pHX Water team for all your help making this process so efficient and easy to understand."
"We used the pHX Water team to carry out a legionella risk assessment for our hospitality business. Their approach was very professional and incredibly quick to respond. They took care of all the laboratory testing and now performs routine checks to keep us within our legal requirements as business owners. We’ve been left with a file for all the documentation all properly organised so it really is a turn-Key service. I would have no hesitation in recommending pHX Water."
“I had PHX carry out a replacement water filtration system at a rural property outside Stirling that was serviced by a private supply. Very knowledgeable staff and prompt service. Would highly recommend them”