The presence of sediment, sludge, scale and other material within the system together with biofilms are also thought to play an important role in harbouring and providing favourable conditions in which the Legionella bacteria may grow.
A biofilm is a thin layer of micro-organisms which may form a slime on the surfaces that come in contact with water. Such biofilms, sludge and scale can protect legionella bacteria from temperatures and other biocides that would otherwise kill or inhibit these organisms if they were freely suspended in the water.
Shower heads and hoses which remain semi wetted after use can accumulate lime scale and harbour biofilms and bacterial growth. As showers, by design produce aerosols that can be inhaled by the user, particular care should be taken to clean shower heads and hoses routinely as part of your Legionella control programme.
As part of your routine Legionella control maintenance and to comply with H&SE ACOP L8, shower heads and hoses should be dismantled, cleaned and descaled on a quarterly basis. SCM Services Ltd are equipped and trained to remove, dismantle and descale your shower heads and hoses ensuring that your shower heads are free from any underlying biofilm and bacteria.
By doing this on a regular basis this will reduce the risk of Legionellosis and help you ensure compliance with H&SE Legislation.
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