Can a Landlord Do Their Own Legionella Risk Assessment?
Let’s be honest: property management is increasingly expensive. Between rising mortgage rates, stricter EPC regulations, and ever-changing HMO licensing fees, landlords are constantly looking for ways to cut costs. When it comes to water hygiene, the most common question we get asked is: "Can I just do the Legionella Risk Assessment myself and save the money?"
The short, direct answer is yes. Under the Health and Safety Executive's (HSE) guidelines, there is no explicit law stating that you must hire an external contractor to conduct a Legionella Risk Assessment.
However, before you print off a free template from the internet and walk around your rental property turning taps on and off, you need to understand exactly what you are taking on. By choosing to do it yourself, you are legally assuming 100% of the liability if something goes wrong.
The "Competent Person" Catch
The HSE Approved Code of Practice L8 (ACoP L8) is the rulebook for managing Legionella. It states that the duty holder (the landlord) must appoint a "competent person" to carry out the assessment.
The HSE defines competency very strictly. To be deemed competent in a court of law, you must have sufficient training, experience, knowledge, and equipment to properly identify water system hazards. If you do not possess these, you cannot legally act as the competent person.
- Temperature Profiling: Using a calibrated digital probe, you must prove that cold water at the sentinel taps stays below 20°C within two minutes, and hot water reaches at least 50°C within one minute.
- Identifying Dead Legs: You must physically trace the pipework to find redundant, capped-off pipes where water can stagnate and breed bacteria.
- Inspecting Cold Water Storage: If the property has a loft tank, you must safely access it, check for biofilm, rust, or sediment, measure the stored water temperature, and verify the lid is secure against pests.
- Assessing Aerosol Risks: Identifying every shower, spray tap, or external hose that could aerosolise contaminated water for a tenant to inhale.
The Cost of Getting it Wrong
If you undertake the assessment yourself to save the £90 - £150 fee typically charged by a professional, you are taking a massive gamble with your portfolio and your personal freedom.
If your DIY assessment misses a critical hazard—perhaps a dead leg hidden behind a stud wall, or a failing thermostat on a calorifier—and a tenant contracts Legionnaires' disease, you have no legal defence. Because you acted as the "competent person," you are entirely responsible for the negligence.
- HMO Licence Rejection: Local councils will actively reject HMO applications if they feel the submitted water hygiene reports lack professional rigour.
- Unlimited HSE Fines: Fines for health and safety breaches are uncapped and based on your turnover.
- Void Landlord Insurance: If you face a civil injury claim from a sick tenant, your insurer will likely void your policy if your assessment was not conducted by an accredited professional.
The Verdict: Is it Worth the Risk?
While the law permits you to do it yourself, the reality is that the financial and legal risks far outweigh the minor upfront savings. Hiring a certified water hygiene assessor transfers the liability. If they conduct the assessment and sign it off, they carry the professional indemnity insurance—not you.
Furthermore, maintaining full compliance across your portfolio usually requires more than just water testing. You are also legally required to maintain Health and Safety Audits, electrical checks, and, for many properties, Fire Risk Assessments. By using a professional network, you can often bundle these services together for a highly competitive rate, ensuring absolute peace of mind.
If you are ready to remove the legal burden from your shoulders, use our priority quote form below to connect with a certified assessor in your local area today.
Your 3 Steps to Water Safety Compliance
Hire a Competent Professional
Do not risk a DIY assessment. Use our network to hire an accredited assessor who carries calibrated equipment and professional indemnity insurance.
Execute Remedial Actions
If the assessor identifies hazards—such as redundant pipework or uninsulated cold water tanks—hire a qualified plumber to rectify these issues immediately to protect your tenants.
Keep the Record Safe
Retain your professional Legionella Risk Assessment on file. You will need to produce this instantly if requested by the HSE, your local council licensing board, or your insurance provider.
Ready to book your Assessment?
Transfer the legal liability. Enter your details below to get an immediate, no-obligation quote from our nationwide network of accredited safety assessors.
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