S.L. 465.3 Art. 11Maintenanceofhot and cold water systems. Start up procedures. Routine disinfection. Routine inspections and testing. Biocide treatments. Microbiological sampling frequency.

The responsible person shall ensure that:

(a) unless the system is shut down or drained of water or is otherwise not in use, any hot and cold water system that the responsible person owns, manages or controls is maintained and tested in the manner set out in these regulations and according to the guidelines;

(b) the hot and cold water system is disinfected by heat or chlorination and cleaned immediately prior to initial start up following commissioning, or any shut down period of greater than one month;

(c) the hot and cold water system is disinfected by one or more of the following methods:

(i) at least once each month by heat or chlorination; or

(ii) continuously by means of automatic low level chlorination; or

(iii) continuously by means of ultra-violet light treatment; or

(iv) a method approved in the guidelines;

(d) the hot and cold water system is inspected and that the hot and cold water systems are maintained at all times in accordance with the guidelines and Schedule 1 and 3;

(e) when biocides are used to treat water systems, they are meticulously controlled and checked at least weekly or as otherwise indicated to ensure that it is operating correctly;

(f) at least once every six months a sample of the water from the hot and cold water system is taken and delivered to an accredited laboratory for testing and reporting on Legionella.