Legionella control. Air and Water hygiene. Legionella Risk Assessments, cleaning and disinfection of water systems. Water sampling. Full monitoring regimes. All water remedial works completed. Sectional water storage tank installations 1000 -100000 lts projects. Pure-Tech UK Ltd was established in 1995 and specialises in Air Hygiene and Water Hygiene services for commercial and government buildings throughout the UK and the Isle of Man.