Water hygiene risk assessments and testing to control the risk of Legionella bacteria in water systems.
Legionella bacteria can grow in poorly maintained water systems and cause Legionnaires' disease. We assess your hot and cold water systems, cooling towers and storage tanks, and put a practical monitoring regime in place to keep the risk under control.
Governing regulation: Health & Safety at Work etc. Act 1974 / COSHH Regulations 2002
Standard / guidance: HSE Approved Code of Practice L8 and guidance HSG274
This service is carried out on our behalf by our fully vetted subcontractors, so you can be confident of the same high standard of work and compliance you'd expect from AP Compliance Solutions.
| Application | Frequency |
|---|---|
| Full legionella risk assessment | Every 2 years, or on system change |
| Temperature monitoring (taps & outlets) | Monthly / quarterly rotation |
| Tank & cylinder inspection | Annually |
| Shower head descale & disinfection | Quarterly |
Frequencies above are general guidance based on published standards and typical risk levels — your risk assessment or landlord obligations may require a different interval.
Duty holders — including landlords and employers — have a legal responsibility to assess and control the risk of Legionella in water systems. A proper risk assessment and monitoring regime protects occupants and demonstrates compliance with HSE guidance.
Assessing hot and cold water systems, tanks and outlets for legionella risk factors.
Sentinel and representative outlets tested against HSE guidance thresholds.
A practical monitoring regime set out in a clear scheme of control document.
Logbook and remedial disinfection where elevated risk is identified.
Yes — the duty applies to any workplace with a water system, regardless of size; the assessment is often straightforward if your system is simple.
We recommend and can carry out remedial works such as disinfection, temperature adjustment or system modifications to bring the risk back under control.