Legionella temperature monitoring log
A simple log for recording routine hot and cold water temperatures at sentinel and representative outlets, with space to note the action taken when a reading falls outside target.
This PDF is not tagged for assistive technology. Use the accessible HTML worksheet below to complete it online, or use the structured CSV.
Fill in online
Complete this worksheet online
- Use the measurement points, method, elapsed time and limits defined in the current written scheme.
- Record exceptions and the corrective action or escalation reference; a temperature entry alone does not demonstrate control.
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Enter the date.
Enter the outlet id / location, or leave it blank if not known.
Enter the type (sentinel/rep), or leave it blank if not known.
Enter the reading in °C.
Enter the reading in °C.
Enter the within target? (y/n), or leave it blank if not known.
Keep it short and avoid personal data.
Enter the initials, or leave it blank if not known.
| Date | Outlet ID / location | Type (sentinel/rep) | Hot °C | Cold °C | Within target? (Y/N) | Action taken | Initials |
|---|---|---|---|---|---|---|---|
| 2026-06-08 | G/F kitchen tap (sentinel, nearest calorifier) | Sentinel | 56 | 17 | Y | None required | AB |
| 2026-06-08 | 2/F shower 204 (sentinel, furthest) | Sentinel | 47 | 21 | N | Logged fault; flushed and rechecked; calorifier flow temp raised | CD |
Sample rows are illustrative. Download the PDF for a clean print-ready form, or the CSV to fill in digitally.
How to use it
- Record a reading for each listed outlet on the planned date, noting whether it is a sentinel or representative point.
- Hot water is generally expected to reach around 50C (55C in healthcare premises) within about a minute, and cold water to stay below 20C within about two minutes: confirm your own targets against your risk assessment and HSG274.
- Mark 'N' whenever a reading is out of range and describe what you did in the action column.
- Sign or initial every entry and keep completed sheets with your logbook so trends can be reviewed.
Background: Legionella temperature monitoring log sheet: free template and how to fill it in
"Legionella temperature monitoring log (free template)." Legionella.io. https://legionella.io/templates/temperature-monitoring-log/
Free to reuse under CC BY 4.0: quote, adapt or republish with attribution and a link back to the original.