Legionella Compliance Monitoring

Legionella Compliance Monitoring

Posted 07 November, 2019 at 11:38

Author Suzanne Brogan on behalf of Brogan & Co

Legionnaires Disease

Legionella Compliance Monitoring

The Issue

Any water system that has the right environmental conditions could potentially be a source for legionella bacteria growth.  There is a reasonable legionella risk in your water if:-

  • Water is stored or re-circulated as part of your system
  • The water temperature in part of the system is between 20 – 45 degrees C
  • There are deposits that can support bacterial growth
  • It is possible for water droplets to be produced and dispersed
  • Employees, visitors, etc are exposed to any contaminated water droplets.


The control of Legionella Bacteria in water systems is a legal obligation by the employer for employees and visitors by protecting occupational health and safety in line with HSG 274 part 2.

Control measure required include:

  • Risk assessments
  • Record keeping
  • Corrective Action
  • Audit Trails

HSG 274 Part 2 indicates that the best method of reducing risk is the Automatic Water System Temperature Monitoring

Traditional Methods

Methods for watering temperature monitoring mainly include taking manual readings from all outlets or as identified in the risk assessment.

Considerations and Issues:

  • Human Error
  • Frequency of information
  • Multisite locations require a ‘person in a van’ to attend sites
  • Security and unrestricted access to buildings
  • Required to be escorted around buildings
  • City parking which affects cost and time
  • Travel and carbon impact
  • Time-consuming
  • Waste of water

The Solution

A simple three-step approach to compliance

Report – real time records Audit trail identify issues

Measure – Automatic temperature live data.  Accurate information.

Store – Upload to secure cloud access data anywhere.  No manual recording.

Savings –                   Reduce wastewater, redeploy labour more effectively, reduce carbon

                                     Reduced carbon, eliminate unnecessary remedial works.

Measurements –     Repeatable, error-free process

                                    Automatic and continuous temperature recording

Reporting -                 Electronic monthly reports

                                     Auditable process and online logbook

Compliance -              Improved Health and Safety

                                       Exceed requirements of HSG274 part 2

System Overview

Our system IoT remote water temperature monitoring solution consists of the following components:

  • Long-range LoRa RF Wireless Temperature Sensors – up to 4 temperatures per sensor
  • Secure Cellular Gateway -No site I.T. security issues
  • Cloud-based server – accessible Worldwide via any browser
  • Legionella Online dashboard portal

Automated weekly exceptions

Monthly reports


30 seconds to read

20 minutes to transmit

Up to 10-year battery life

Temperature Probe Options


Dual (Hot and cold)

Triple (Hot, cold & TMV)

Quad (x4 local sensors)


Call 01536 851671 or email sales@brogantelecoms.co.uk

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