Check Your Legionella Temperature Compliance — Free Checker for UK Buildings
Enter your hot and cold water temperature readings and get instant pass/fail results against ACoP L8 thresholds with next steps for any failures.
ACoP L8 and HSG274 Part 2 set specific temperature thresholds for legionella compliance. Hot water must be stored at 60°C or above and delivered at 50°C or above at outlets. Cold water must be below 20°C. Legionella bacteria thrive between 20°C and 45°C — maintaining temperatures outside this range is a primary control measure.
Enter your temperature readings below to check them against the L8 thresholds. Failed readings include specific next steps for investigation and remediation.
This is a quick compliance screen based on the core L8 temperature thresholds. It does not replace a full monitoring record, which should also capture outlet location, timing, and sentinel-outlet context as part of your written scheme.