Thomson Environmental Services

Established in 1993, Thomson Environmental Services Ltd has been delivering water treatment products and services to the building services industry for over 30 years. As a privately owned limited company, we have operated successfully in this capacity since our inception.

We work primarily across the Central and Greater London areas, while also supporting clients nationally and internationally. Our offices are based at the Surrey Research Park in Guildford, where we have been located for almost three decades.

Thomson provides building owners, managers, engineers, maintenance personnel and ‘the responsible person’ with all the tools required to achieve compliance within the built environment. Our services are highly personalised and tailored to meet customer requirements while aligning with current legislation, recommended guidance and industry best practice.

Our core expertise centres on health and safety services relating to water stored and distributed within buildings. While our primary focus is the prevention and control of legionella bacteria, we also undertake a wide range of activities associated with water quality and the safe use of water systems.

We support clients across multiple sectors, including health care, NHS Trusts and private hospitals, commercial properties and offices, local government offices, managed residential and commercial blocks, hotels and teaching/higher educational establishments.

Our Services

Legionella Risk Assessment

Detailed Legionella risk assessments for commercial and residential water systems, helping you identify hazards, understand your responsibilities and take practical steps to remain compliant.

Monitoring Contracts

Ongoing water hygiene monitoring contracts tailored to your building, providing regular checks, clear reporting and reliable support to help manage Legionella risk throughout the year.

Cleaning & Disinfecting

Professional cleaning and disinfecting of water systems, tanks and associated components to help remove contamination, improve hygiene and support safe, compliant operation.

Sampling

Accurate water sampling carried out by experienced specialists, with clear results and practical guidance to help you understand water quality and respond appropriately.

Booster Pump Servicing

Routine servicing and maintenance for booster pump systems, helping to keep water pressure consistent, reduce breakdown risk and support the smooth running of your building.

Training

Practical Legionella awareness and water hygiene training for responsible persons, facilities teams and site staff, helping them understand risks, duties and everyday control measures.

Thomson Environmental Services have been excellent to work with. Their knowledge of Legionella control is clear, and they explained everything in a straightforward, practical way. From the risk assessment to ongoing monitoring, the service has been professional, thorough and reliable throughout.