LWS are a national water solutions specialist offering a comprehensive range of water analysis, laboratory testing and on-site water sampling services to businesses and domestic-private properties throughout the UK.
LWS are a national water solutions specialist offering a comprehensive range of water analysis, laboratory testing and on-site water sampling services to businesses and domestic-private properties throughout the UK.
Our laboratory water analysis and on-site sampling services have been developed to accurately identify the absence or presence of bacteria within water samples.
Our UKAS accredited laboratory analysis, evaluation and expert interpretation of test resultsmakes for an accurate and efficient service which is essential in so many differentcircumstances.
Our highly trained engineers are experienced in obtaining and handling water samples so as to maintain a high standard throughout the sampling and collection process.
Our professional onsite water sampling services cover a wide range of tests that include microbiological and chemical analysis
Microbiological testing | Chemical parameters |
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On completion of our laboratory analysis, a full report is provided and results interpreted by our expert engineers, the interpretationof the results are then passed on to the client with an explanation of what the results mean for you, your water systems and the safety and health of those exposed to your water systems.
“The risk from exposure to Legionella should be prevented or controlled; precautions include keeping the system and the water in it clean.”
ACoP L8, paragraph190.
Clean and disinfection services are carried out in accordance with ACoP L8 following the procedures outlined in BS6700.
The primary method used to control the risk from Legionella is water temperature monitoring.
Water systems should be operated at temperatures that prohibit the growth of Legionella bacteria, for example
All water systems should be routinely monitored by a competent person to ensure compliance, the ‘sentinel’ outlets (furthest and closest to each asset) would be identified in the legionella Risk Assessment for monthly checking of the distribution temperatures. In addition, all stored hot water temperatures should be monitored every month and cold storage vessels at least every six months
Stagnant water favours Legionella growth. To reduce the risk you should remove dead legs/dead ends in pipe-work, flush out infrequently used outlets (including showerheads and taps) at least weekly and clean and de-scale shower heads and hoses at least quarterly. Cold-water storage tanks should be cleaned periodically and water should be drained from hot water cylinders to check for debris or signs of corrosion.
Design systems to minimise Legionella growth, by:
Other methods to control Legionella include copper and silver ionisation and biocide treatments (e.g. chlorine dioxide). To ensure that they remain effective their application will need suitable assessment as part of the overall water treatment programme including proper installation, maintenance and monitoring.
“A suitable and sufficient assessment is required to identify and assess the risk of exposure to Legionella bacteria from work activities and water systems on the premises and any necessary precautionary measures.”
ACoP L8, paragraph23.
Our comprehensive and compliant Legionella risk assessments include identification and evaluation of all potential sources of risk associated with Legionella within your building’s water system.
A City and Guilds qualified Legionella risk assessor visits your premises to perform a site survey.
This involves:
Following the site visit, the risk assessment is typed up and issued to you electronically and/or in hardcopy depending on your requirements.
This includes: