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Commercial maintenance

Legionella and water hygiene

Risk assessments, sampling, tank cleaning, and TMV servicing to keep you HSG274-compliant.

Legionella is a legal compliance issue that catches a lot of landlords and small business owners off-guard. Under the Health and Safety at Work Act 1974, the Control of Substances Hazardous to Health Regulations 2002 (COSHH), and HSE's L8 Approved Code of Practice, every duty-holder (landlord, employer, person in control of premises) must assess the risk of Legionella exposure and manage it appropriately. The penalties for getting this wrong are significant, Legionnaires' disease can be fatal, and HSE prosecutes regularly.

Our water hygiene team provides Legionella risk assessments, written schemes of control, ongoing temperature monitoring programmes, water sampling, tank cleaning and disinfection, across residential rentals, HMOs, hotels, healthcare, schools and commercial premises.

Need this service in London?
When We Use This

Where this service applies

  • Landlord Legionella risk assessment (residential rentals, HMOs)
  • Hotel water hygiene management programmes
  • Healthcare and care home compliance (CQC requirements)
  • School and nursery water hygiene
  • Commercial office water systems
  • Cooling tower notification and management
  • Showerhead disinfection and replacement programmes
  • Cold and hot water tank cleaning and chlorination
  • Temperature monitoring (sentinel taps, calorifier flow/return)
Our Process

How we deliver

  1. 1

    Site survey
    All water systems mapped, incoming main, tanks, calorifier, distribution, outlets.

  2. 2

    Risk assessment
    Per HSG274 and L8 ACoP. Stagnation, temperature, contamination risk evaluated.

  3. 3

    Written scheme of control
    Documented control measures, monitoring requirements, responsibilities.

  4. 4

    Sampling (where indicated)
    UKAS-accredited laboratory analysis.

  5. 5

    Remedial work (where required)
    Flushing rarely-used outlets, descaling showerheads, tank cleaning, temperature adjustment.

  6. 6

    Ongoing monitoring
    Temperature recording, sentinel-outlet flushing, periodic re-sampling.

  7. 7

    Annual review
    Risk assessment revised per L8 ACoP guidance.

Frequently Asked

Your questions answered

Do landlords need a Legionella risk assessment?
Yes, every landlord has a duty under the Health and Safety at Work Act 1974 and COSHH 2002 to assess Legionella risk in any rental property. For typical low-risk domestic rentals (mains-fed, no large tank, regular use) the assessment can be brief, but it must exist in writing. We provide compliant assessments priced per our published rate card (see full pricing).
What is HSG274 / L8 ACoP?
L8 (Approved Code of Practice for Legionella) and HSG274 (Health and Safety Guidance) are the HSE's official guidance documents on managing Legionella in water systems. Compliance with L8 is treated as compliance with the underlying legal duty. Failure to follow L8 in the event of an outbreak is treated as criminal negligence.
How much does a Legionella risk assessment cost?
Risk assessments are priced per our published rate card (see full pricing), with HMOs and commercial properties priced by scope. Multi-property landlord packages are available, priced after a free consultation and a written fixed-price quote, with no obligation.
How often does Legionella risk assessment need to be repeated?
Per L8 ACoP, the assessment must be 'reviewed regularly and whenever there is reason to believe that the original assessment may no longer be valid'. Typical review interval: 2 years for low-risk domestic, annually for commercial, immediately following any significant system changes.
Do I need to take water samples?
Sampling is risk-based, not mandatory for all properties. Sampling is required if (a) the risk assessment identifies improved risk, (b) symptoms or test results indicate possible contamination, (c) the property has unusual systems (large tanks, infrequent use). For most domestic rentals, no sampling is needed.
Are you registered for water hygiene work?
Yes, our water hygiene team is registered with the Water Management Society (WMSoc) and Legionella Control Association (LCA). All technicians hold City & Guilds Level 2/3 in water hygiene compliance.