Legionella Control & Hot Water Log – Temperature Monitoring, VVC & Excel | Word/PDF

Legionella Control & Hot Water Log – Temperature Measurement, Hot Water Circulation, and Self-Monitoring is a digital document package in Word, PDF, and Excel for housing cooperatives, property owners, landlords, operations managers, and other business operators who need to document preventive controls of hot water systems.

The package covers control points, actually measured temperatures, risk assessment, deviations, and follow-up. A temperature log is not a Legionella culture, a laboratory test, or proof that the water system is free of Legionella bacteria. Always consult experts when circumstances require technical and medical assessment.

Document Templates for Legionella Control – File Overview

Excel – Temperature Log with Nine Tabs

Overview, Control Points, Temperature Log, Risk Assessment, Deviations, Actions, Follow-up, Sampling, and Read Me. The workbook has 100 pre-filled data rows per register tab, status bars, control formulas, and summary measures. Locally determined minimum/maximum values for relevant measurement points can be entered. Deviating values are flagged for manual handling.

Excel cannot diagnose Legionella. It does not assess the presence of bacteria, the legal compliance of a specific building stock, the protection of sensitive users, or whether a technical intervention has had the intended effect. Risk scores are only an administrative prioritization aid.

Workflow – How the Property Owner Uses the Templates

1. Inventory: map heaters, hot water circulation, mixers, and tap points, including rarely used points and any stagnant pipes.
2. Determine the control plan: document locally applicable references, risk-assessed intervals, competence, and measurement method.
3. Measure and document: record actual temperature, instrument, measurement conditions, and any deviations.
4. Manage risk: escalate low temperatures, deviating water conditions, or scalding risks to the responsible person and, if necessary, an expert.
5. Follow up: document actual actions, possible sampling results, and a separate decision on continued operation and control.

Legal Requirements and Temperature References

Prevent Legionella Without Increasing Scalding Risk

According to the Public Health Agency of Sweden's Legionella Guidance, preventive temperature references are normally at least 50 °C in hot water at the tap point and in hot water circulation and 60 °C in heaters or storage tanks where water may become stagnant. Boverket also highlights scalding risk and temperature regulation for particularly sensitive individuals. The references must be applied with the correct measurement point, installation type, and currently applicable building regulations; they do not constitute a universal diagnosis or an automatic boundary decision.

The Property Owner's Self-Monitoring

Chapter 9, Section 9 of the Environmental Code (1998:808) regulates protection against hazards to human health in homes and certain premises. The Public Health Agency states that the property owner or business operator should have routines for monitoring temperature, rarely used tap points, and actions in case of Legionella risk. The agency does not specify a general control interval in days or months that automatically applies to all properties. Intervals and the need for water sampling are determined by risk and the installation.

Scope for Sampling and Remediation

Sampling, laboratory analysis, and remediation measures require a specific assessment of purpose, method, competence, and safety. Increasing the temperature or carrying out chemical treatment without an adequate risk assessment can cause damage. The document package contains no method description for hazardous thermal or chemical remediation and is not medical guidance.

Frequently Asked Questions About Hot Water Logs and Legionella

Must Property Owners Monitor Hot Water Temperature?

Regular self-monitoring is a key preventive routine according to the Public Health Agency's guidance. Which measurement points and intervals are needed depend on the risks associated with the building and business.

Is 50 °C at the Tap Point Always Sufficient?

No. A measured temperature does not automatically show that the entire system is safe or free of Legionella. Other points, hot water circulation, stagnation, measurement method, and scalding risk must be assessed.

What Should the Temperature in a Hot Water Heater Be?

The Public Health Agency and Boverket normally describe at least 60 °C in heaters where water may stand still as an important preventive level. Technical design and appropriate protection must be assessed separately.

How Often Should Temperature Be Measured?

The Public Health Agency does not have a single general prescribed measurement interval for all properties. Establish a risk-based routine and document the basis for the decision.

Does Sampling or Legionella Testing Included?

No. The workbook can record a laboratory report, but no test or laboratory results are included.

Can Excel Approve a Hot Water Installation?

No. Excel only displays administrative control flags. The authorized responsible person and, if necessary, an expert must assess the actual risk and actions.

Are English Templates Included?

The five work templates are in Swedish. One English user guide is included, but not English legal versions of the work templates.

Related Products

For water costs and consumption monitoring, see Water Consumption & Water and Sewerage Cost Monitoring. For general property matters, use the store's separate product for fault reporting and case management. The Legionella control package is aimed at preventive temperature documentation and follows a different case workflow.

Version 1.0 · 2026-11-04 · Sweden · AI-assisted legal source check. No independent external legal, laboratory, or plumbing review. Digital ZIP delivery only after separate manual activation.