Once Swiftclean have conducted a Legionella Risk Assessment, in which they will identify the level of risk within your property, they may recommend a water system clean/refurbishment and continued monitoring.
Regular water quality monitoring is essential to prevent the growth of legionella. It is important to maintain records for monitoring, inspection and testing and ensure there is a clear audit trail for up to at least five years.
Building Managers and Your Responsibility for Water Quality Monitoring
Building managers are provided with a water system logbook, either a paper or an electronic version, which is used to store the records of Legionella control monitoring tasks carried out, this would include;
- Weekly flushing of Infrequently used outlets
- Monthly temperature monitoring from hot water generating sources and outlets (both sentinel and representative)
- Quarterly descaling of spray producing attachments
- Annual cold water storage tank inspection (including temperature monitoring)
- Annual inspection of calorifiers
- Annual servicing of thermostatic mixer valves
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Temperature and conditions will be compared with parameters detailed in HSG274 and BS8580-1; 2019. If conditions are identified which could possibly lead to the growth of legionella bacteria then recommendations will be made to minimise the risk. Training can be given to your staff to enable them to carry out certain periodic monitoring tasks.
What Does Water Quality Monitoring Consist Of?
Examples of regular monitoring would be checking disinfectant and temperature levels and measuring and monitoring these parameters within the building water system to ensure it is operating the best it can to minimise the conditions that encourage Legionella.
If findings show the control level is not being met, it is important to take corrective actions and get conditions back to an acceptable range such as ensuring water is at the highest temperature, that disinfectant levels are detectable where water enters the building and the points of use as well as measuring the pH of the water and if the disinfectant is effective.
When carrying out water quality monitoring, it is important to pay attention to any patterns or trends found in the water parameter measurements and if anything concerning is found, that it is investigated and addressed to find the cause of the problem.
Sometimes, this can be solved by simply flushing out low use areas or adjusting the thermostat to ensure it is outside of the 20°C to 45°C range.
We can work with you to develop a water storage monitoring system, where we can provide water monitoring services and advise how to carry out your regular monitoring in-between appointments.
Remote Water Tank Monitoring
Many buildings are now installing remote water tank monitoring which is usually installed in newer buildings or can be retrofitted to most buildings. It monitors the water system temperature and can automatically flush hot and cold-water outlets.
This clever software provides a water pump monitoring system which monitors temperature and provides flushing when required and flushes the units only when it is required – therefore saving water and energy.
This type of water storage monitoring system measures water level parameters via sensors, allowing it to be measured remotely and automatically. However, there is two-way control if your own regular checks determine flushing is needed.
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