Hi All,
As an accredited and certificated Legionella Risk Assessor I would stick my neck out and say that I have never in the last 17 years seen single Almshouse which required this to be done. “testing” the water for bacteria particularly from a mains source will tell you the bacteria concentration at that time on that day. Given the right circumstances the bacteria multiplies exponentially so a low count at 9am could be millions of times higher by 5pm. Testing is only ever needed in large multiple occupancy buildings or healthcare settings where there may be some doubt as to the effectiveness of the controls.
If the right control measures are in place i.e. cold water below 10 degrees and hot above 50 degrees the bacteria cannot grow and testing is pointless.
I do know of some legionella contractors, however who treat all Almshouses the same as Nursing Homes and recommend much higher levels if action than the law or HSE required.
Of course a Legionella Risk Assessment IS required for all properties with water and regular checks on temperature will also always be needed.
Tim
Tim Richardson MCIAT MCIOB FSAI MRICS MEI MIFSM AWMSoc WMSoc Cert
Chartered Architectural Technologist, Chartered Construction Manager, Chartered Building Surveyor, CIAT-Accredited Conservationist
Accredited Domestic Energy Assessor
Registered Fire Risk Assessor
Accredited & Certified Legionella Risk Assessor