This office block had been experiencing issues with Legionella for over a year before contacting us to take samples and rectify the issue.
Due to the age of the building, the water system’s design was not functioning for it’s increased occupancy. Already having positive Legionella results, the tenants carried out improvements to the system and called us in to carry out Legionella testing.
High levels of Legionella were still being detected and so a full clean & disinfection and online disinfection were carried out. Legionella was still being detected in the system (although not as high), so we recommended a Sanosil dosing unit was installed.
Within 8 weeks of installation NO legionella was detected and to this date, still none.
Office Block in Dublin 11
In August 2020 we were contact by our “now” clients who advised us for over a year they had been having an issue with Legionella in their system. As it was an older building (3 storeys), the system which was installed previously not did meet the requirements of the occupancy as it was now.
- They carried out upgrades in their system (replaced the existing water tanks and removed all dead legs) and asked us to come in and carry out the Legionella sampling and testing.
- We carried out a total of 36 samples on our first visit with nearly half of these detected Legionella with some having a count of over 3,000 CFU/mL.
Due to the Legionella being detected throughout the whole system and not just one point, we recommend that a Sanosil dosing system is installed so that it can be assured the disinfectant goes through the full system at a controlled, safe amount.
The dosing system was installed in December 2020 with the Sanosil Super 25 being used. Due to the Christmas break the system was not in use until January 2021 and when we re-sampled in March 2021 all 46 sampled were showing NOT DETECED.
With constant monitoring and dosing there is still NO Legionella being detected