Legionella: Why Compliance is Required by Law

Legionella is more than just a health risk – it’s a legal responsibility for every employer, landlord, and duty holder in the UK. Failure to manage the risk of Legionella can lead to serious illness, prosecution, and significant fines. At OJ Health and Safety, we help businesses stay compliant through professional Legionella risk assessments, testing, and management plans.

What is Legionella?

Legionella bacteria are naturally found in water systems but become dangerous when they multiply in conditions such as stagnant water, warm temperatures, or poorly maintained systems. If inhaled as water droplets, they can cause Legionnaires’ disease – a potentially fatal form of pneumonia.

Your Legal Duty

UK law makes it clear: if you manage premises with a water system, you must control the risk of Legionella. The Health and Safety at Work Act 1974 and COSHH Regulations (Control of Substances Hazardous to Health) require employers, landlords, and those in control of premises to assess risks and implement control measures.

The Approved Code of Practice (ACOP) L8 from the Health and Safety Executive (HSE) specifically details how businesses should manage water systems to prevent Legionella outbreaks. This includes carrying out:

• Legionella risk assessments for all hot and cold water systems

• Ongoing monitoring and Legionella testing

• Regular maintenance and cleaning of water tanks and pipework

• Record keeping and staff training

Failing to comply with ACOP L8 is not just a breach of best practice – it can result in legal action.

Why Legionella Risk Assessments Are Essential

A Legionella risk assessment is the first step towards compliance. It identifies hazards in your water system, assesses who is at risk, and recommends actions to eliminate or control those risks.

Our team at OJ Health and Safety provides thorough assessments, tailored control schemes, and training to ensure your business meets legal requirements and keeps staff, customers, and visitors safe.

Protect Your Business and Your People

Ignoring Legionella compliance can lead to outbreaks, reputational damage, and prosecution. Investing in Legionella management is not just a legal requirement – it’s part of your duty of care.

Contact OJ Health and Safety today to book your risk assessment and stay fully compliant.

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Legionella Compliance FAQs

How often should a risk assessment be carried out?
The HSE recommends reviewing your risk assessment at least every two years or whenever there is a significant change to your water system, building use, or staff.

Do landlords need a risk assessment?
Yes. Landlords have a legal duty to assess and control risks in rental properties, even for small domestic systems.

What happens if I don’t carry out a risk assessment?
Failing to manage the risk can result in enforcement notices, fines, or even prosecution if someone contracts Legionnaires’ disease from your premises.

Is testing mandatory?
Testing is not always mandatory, but monitoring water temperatures and system conditions is. Testing may be required if your risk assessment identifies a higher risk.

Who can carry out a risk assessment?
It must be done by someone who is competent and understands control requirements. Our experienced consultants at OJ Health and Safety are qualified to provide full compliance support.