monkey_omelette Posted May 27 Posted May 27 The house I'm in at the moment has a large water tank in the back garden. When I have my morning shower the water is luke warm but if I have a shower in the afternoon (when the sun has been on it) the water comes out hot. Between 25C and 50C legionella can grow, above 50C, Ideally 60C it's killed off which is why in the UK we have an immersion element in our water tanks to do a legionella purge every so often. What stops legionella growing in the outdoor tanks in Thailand?
monkey_omelette Posted May 27 Author Posted May 27 3 hours ago, fygjam said: https://www.cdc.gov/control-legionella/media/pdfs/toolkit.pdf Thankyou but that does not explain how Thailand overcomes the problem with these outside water tanks.
monkey_omelette Posted May 27 Author Posted May 27 Ahhhhh, they add Chlorine to kill bacteria. 2023-Annual-Water-Quality-Report-ENG.pdf
Zambo Posted Wednesday at 02:39 PM Posted Wednesday at 02:39 PM Yes chlorine is added as a powerful disinfection chemical. But that protection only lasts while the water is moving through the sealed mains pipe. There is a general "rule" that for drinking water only direct from the mains pipe should be used and it should be checked that the local supply is produced to satisfy potable (drinking water) requirements. If there is an intervening tank, that cannot be assumed to be suitable as a drinking water source as there could be organic matter in the tank - dead pigeon being a common example. 1 2
fygjam Posted Wednesday at 03:30 PM Posted Wednesday at 03:30 PM 49 minutes ago, Zambo said: organic matter in the tank - dead pigeon being a common example. A very common occurrence. 3
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