From assessment to monitoring to prevention – practical solutions embedded in experience

Legionella control is essential for maintaining safe water systems and meeting your legal duties. At TWC, we deliver complete Legionella management – from initial risk assessment and sampling to ongoing compliance checks, remedial works and accurate digital reporting.

We’ve been helping clients stay compliant for over three decades. Our multi-skilled team works across healthcare, education, housing and commercial property, combining technical knowledge with an approachable, problem-solving attitude.

Comprehensive risk assessment for Legionella Bacterium

Every Legionella control programme starts with a detailed survey.

  • Our assessors examine your site layout, storage, temperatures, flow routes and management systems.
  • We identify potential hazards and produce tailored recommendations that are practical, proportionate, and compliant with ACoP L8 and HSG274.
Legionella Risk Management 2

Our Services

Our comprehensive programmes designed to optimise system performance, protect assets, and ensure regulatory compliance across heating, cooling and process water systems.

  • Chemical treatment programmes for scale, corrosion, and microbiological control.
  • Cooling tower treatment: biocides, inhibitors, bleed control, side-stream filtration.
  • Boiler and steam systems: Monitoring and boiler water chemicals.
  • Process water treatment: filtration and water softening installation and servicing.
  • Sampling and laboratory analysis of heating, cooling, and process water systems.
  • Technical engineering support for troubleshooting and optimisation.

Supply, installation, and commissioning of equipment that improves water quality and reduces operating costs.

  • Dosing and control systems (automated pump skids, controllers, sensors).
  • Softening systems to prevent scale formation.
  • Filtration units (cartridge, multimedia, side-stream).
  • UV disinfection units for microbial control.
  • Remote monitoring and data-logging solutions.

Complete end-to-end services that provide improved system reliability and efficiency, reduces energy and water consumption, and extends equipment life – meaning lower operational risk and long-term savings, as well as being compliant with standards such as ACOP L8, HSG274, BSRIA BG29/BG50.

  • System audits and sampling (micro, chemistry, corrosion metals).
  • Flushing and cleaning (pre-commission, remedial, dynamic flushing).
  • Dosing of corrosion inhibitors and biocides.
  • Filtration solutions (side-stream filters, magnetic filters).
  • Glycol supply and testing (freeze protection).
  • Heating, cooling, and process water systems monitoring through on-site and laboratory testing.

Our new digital platform increases transparency and accountability.

  • Automates reporting, improves accuracy, and offers real-time visibility.
  • Secure online access to reports, photographs, and certificate
  • Helping you stay audit-ready and accountable, while maintaining oversight at-a-glance.

Why choose TWC

  • More than 300 years of combined technical experience
  • Independent business with national capability
  • Quick response and expert support when you need it most
  • Clear, reliable communication at every stage

TWC provides reassurance built on proven experience. With our people and systems in place, you’ll have the confidence that your buildings are safe, compliant, and well-managed.

Approachable

Contact us

TWC Services have been making water work since 1992. We believe in what we do, and so do our clients.

Our water treatments and water hygiene services – and our strong customer focus – make us the natural choice. Our site will tell you more about what we do, and how we can help you.
  • Decades of experience
  • Nationwide coverage
  • Clear communication
  • Support when you need it

Contact our team