Legionella Testing for Landlords in the UK: Practical Guide

Landlords often search for legionella testing, but the first step is usually a proportionate risk assessment that considers the water system, occupancy, and how the property is managed.

Routine laboratory testing is not always necessary for simple low-risk homes, but it can be useful after long vacancy, water quality concerns, unusual temperatures, or higher-risk plumbing arrangements.

For HMOs and blocks, clarify who controls communal tanks, plant rooms, showers, stored water, and little-used outlets because responsibility is often shared across agents and contractors.

Keep records of assessments, tenant information, flushing during void periods, remedial works, and any test results so you can demonstrate sensible management.

Choose a contractor who understands residential property and can give clear, proportionate advice rather than over-specifying commercial routines for every dwelling.