UK and Ireland landlord guidance

Legionella advice for landlords across the UK and Ireland

The practical control principles are similar everywhere — avoid stagnation, and keep water either hot enough or cold enough — but the legal duties, the regulator and the surrounding rental standards differ by jurisdiction. Choose your country for the detail that applies to your lettings, including what a Legionella risk assessment should cover and what you need to keep.

Choose your jurisdiction

England

Health and Safety Executive (HSE)

HSE-regulated duty under health and safety law, with housing conditions judged separately under the HHSRS and fitness for human habitation rules.

England landlord guide

Scotland

Health and Safety Executive (HSE), with Scottish housing standards enforced separately

Same reserved health and safety duty as England, but the Repairing Standard statutory guidance and the model private residential tenancy notes address Legionella directly.

Scotland landlord guide

Wales

Health and Safety Executive (HSE)

The same HSE duty as England, sitting inside the Renting Homes (Wales) fitness regime and Rent Smart Wales registration and licensing.

Wales landlord guide

Northern Ireland

Health and Safety Executive for Northern Ireland (HSENI)

HSENI is the regulator and the legal basis is Northern Ireland's own 1978 Order and COSHH (NI) 2003, not the Great Britain legislation.

Northern Ireland landlord guide

Republic of Ireland

Health and Safety Authority (HSA) for occupational duties, with national guidance from the HPSC

A separate jurisdiction: UK guidance does not apply, and the position rests on HSA occupational duties where relevant, HPSC national guidance and rental minimum standards.

Republic of Ireland landlord guide

The short answer for UK landlords

You must identify, assess and manage the risk from Legionella in the water system of a property you let.
Most straightforward domestic water systems are likely to be low risk and need only a simple, proportionate assessment.
There is no statutory Legionella certificate and no fixed annual renewal date for residential lettings.
A landlord may self-assess where they are competent for that particular system.
Complex, communal, higher-risk or uncertain systems should be referred to a competent specialist.

This summary covers England, Scotland, Wales and Northern Ireland. It does not apply unchanged to the Republic of Ireland, which is a separate jurisdiction with its own legislation and national guidance — see the Republic of Ireland landlord guide.

Not sure what kind of water system the property has? Our guide to identifying your home’s water system shows you how to tell a combi boiler from a stored hot-water cylinder, what the tanks in the loft do, and which components an assessment asks about.

What a useful assessment should produce

A proportionate assessment is short, but it should still be specific to the property. These are the parts that make a record useful later.

A description of the property and its water system, including whether hot water is stored
A room-by-room register of outlets, including showers, little-used taps and outside taps
Temperature observations and readings where they are appropriate and practical to take
Photographs attached to the observation or finding they support
Clear findings, with an action identified against each
A review trigger and a date you intend to look at it again
Simple guidance for the tenant, such as flushing after a period away

Temperature readings are monitoring and assessment evidence about the condition of the system. They are not microbiological testing for Legionella bacteria.

Why LegionellaWise instead of a blank template

A guided suitability check first, so you can see whether self-assessment looks appropriate before you start
Prompts specific to the property and the water system you describe, rather than a blank form
Photo evidence linked to the finding it supports
Completeness checks before the assessment can be finalised
A structured, versioned Legionella risk assessment report you can retain or share
Actions you can track to completion, and a review reminder on a date you choose
One record per property, so a portfolio stays organised

A review reminder is a prompt for your own diary. The need to review is driven by changes to the property and its risk, not by a reminder date passing. LegionellaWise guides and records the work; deciding whether you have sufficient competence for the system remains yours.

Check if my property is suitable

Free suitability check. No account needed.

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Common landlord questions

How often to review, what temperatures to look for, void flushing, readings that come back low or high, and managing several properties — answered in one place.

Read the landlord FAQ

General information for landlords, not legal advice. Always check the current guidance published by the regulator for your jurisdiction.