Remote Sensor Technology

Continuously monitor your buildings water systems.

Temperature control is the traditional strategy for reducing the risk of legionella in hot and cold water systems.  Cold water systems should be maintained, where possible, at a temperature below 20°C.  Hot water should be stored at least at 60°C and distributed so that it reaches a temperature of 50°C (55°C in healthcare premises) within one minute at the outlets. 

By using clip-on remote temperature sensors you can ensure that the “RP” (Responsible Person)  knows when and where to act.

Remote monitoring provides complete information, saves your budget for other priorities and helps you properly manage your water systems.


Evidence flushing regimes and required temperature levels without any concerns for missed visits or lost records.


Minimise contractor travel, unnecessary tap flushing, water usage and energy usage


Enable proactive, forecasted water system maintenance with complete data


Automatically visualise your data in charts, spreadsheets and dashboards. No more paper systems!


Get an email straight away when your system is or soon will be non-compliant


By removing monthly contractor visits, you will reduce disruption to patients and staff as well as mitigate time spent escorting contractors

Guidance on Remote Temperature Monitoring for Legionella Control

The main difference between manual monitoring and remote monitoring is the frequency of measurement. It is possible to configure remote monitoring systems to take a reading every few seconds, minutes or hours automatically, rather than the monthly measurement normally taken manually. This frequency of measurement can show how systems perform over a period of time, when in use and at rest. It may also allow identification of water movement by detecting rapid temperature changes in the water system and therefore facilitate management of stagnation by flushing based on evidence of little or no use, thus reducing wasted water.

Remote monitoring systems generally use sensors, which relay information to a logging system. The sensors are installed, normally as contact probes directly on suitable pipework, and data should be read at a chosen frequency based on the written scheme of control. Immersion probes are also available but are more difficult to install in existing pipework.

There may be two distinct uses for an installation of remote monitoring:

Temporary installation

  • Commissioning a building
  • Legionella risk assessment
  • Troubleshooting where issues are detected by other means.
  • Verification of remediation works.
  • Temperature profiling for defects during liabilities period
  • Identify inadequate movement/stagnation.

Permanent installation

  • Replace more traditional temperature monitoring (manual or building management systems (BMS)
  • Partially replace more traditional temperature monitoring
  • Complementary to more traditional temperature monitoring

There could be several reasons why these systems might be advantageous, but there are questions and considerations to take into account before making that decision. Remote monitoring may not be appropriate for all systems and manual monitoring may be preferable.

For further guidance we would recommend that you refer to THE WATER MANAGEMENT SOCIETY Initial Guidance for End Users on Remote Temperature Monitoring Systems – Part One Considerations for implementation of systems.

This initial document is intended to help dutyholders and those involved in managing the risk of Legionella to consider whether adopting a remote monitoring approach is suitable for their organisation. Further guidance will be issued covering interpretation and management of the data to provide better understanding of water systems safety.

It should be noted that after installing any additional hardware or changing the method of control, the legionella risk assessment must be reviewed and updated.