Water Hygiene & Legionella Control for commercial buildings
Legionella risk assessments, monitoring, flushing and tank cleaning.
What is water hygiene and legionella control?
Water hygiene is the control of Legionella and other bacteria in a building's hot and cold water systems. It starts with a Legionella risk assessment, followed by a written scheme of monthly temperature checks, flushing of little-used outlets and periodic cleaning.
What does our water hygiene and legionella control service include?
- Legionella risk assessment and written scheme
- Monthly sentinel tap temperature monitoring
- Weekly flushing of little-used outlets
- TMV servicing and shower head descaling
- Tank inspections, cleaning and disinfection
- Logbook kept up to date for inspections
What are the legal requirements?
The HSE Approved Code of Practice L8 and HSG274 set out how duty holders must assess and control Legionella risk. Hot water should be stored at 60°C and distributed at 50°C or above, with cold water below 20°C.
How much does water hygiene and legionella control cost?
| Example site (outside London) | Guide price per month |
|---|---|
| Small office, about 2,000 sq ft | £40 – £60 |
| Medium office, about 10,000 sq ft | £40 – £120 |
| Large office, about 40,000 sq ft | £150 – £450 |
Guide prices for water hygiene and legionella control only, excluding VAT, based on 2026 UK market rates. Your fixed price follows a free site survey.
In London, prices are typically around 25% higher, and around 10% higher across the South East.
Which buildings do we look after?
Offices, schools, care homes, gyms, hotels and any building with stored water, showers or little-used outlets.
Frequently asked questions
Do all businesses need a Legionella risk assessment?
Anyone responsible for premises with a water system has a duty to assess the risk. For most offices the risk is low but still needs assessing and recording.
How often is the risk assessment reviewed?
Whenever something significant changes, and at regular intervals. Many organisations review every two years.
What are sentinel outlets?
The taps nearest to and furthest from the water heater or tank. Checking their temperatures monthly shows whether the system is in control.
Water Hygiene & Legionella Control by area
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A free site survey, a written specification and a monthly price, with no obligation.