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  • Legionella & Pseudomonas risk assessments for healthcare providers

The picture of waterborne pathogens in the clinical environment continues to emerge as complex and challenging. The addition of Pseudomonas to the more established risks posed by Legionella has made tackling infections associated with water systems a less straightforward engineering task.

With vast experience in assisting managers of hospitals, clinics, dental surgeries and care homes to implement their water safety plans, we contribute more than just the completion of a contract of works. We have the knowledge of how our controls fit into your overall strategy for controlling water-based bacterial threats.

The Water Safety Plan

You must consider:

  • Legionella Pneumophila

  • Pseudomonas, depending on the level and type of care

  • Drinking water quality

  • Of increasing concern, Stenotrophomonas maltophilia and Mycobacteria

  • Scalding prevention wherever there is a foreseeable risk

In these systems:

  • Hot and cold water storage and distribution

  • Hydrotherapy pools

  • Whirlpool or “Arjo” type baths

  • Water softeners

  • Thermostatic Mixing Valves (TMVs)

  • Expansion vessels

  • In the case of Pseudomonas, the environment beyond the water system

Hospitals, nursing homes and care homes – Legionella control and scalding prevention

TECHNICAL GUIDANCE: Legionella and scalding in care homes

The primary method of Legionella control in many settings is temperature, meaning high hot water temperatures of 50-550C at outlets. The scalding risk this creates is usually addressed by fitting Thermostatic Mixing Valves (TMVs). We have helped many of our clients in balancing these two seemingly conflicting requirements without increasing the danger to patients or residents.

Note that care homes providing augmented care must include the recommendations of the Hospital Technical Memoranda in their control programmes.

Dental Legionella risk assessment

Hospital Legionella and Pseudomonas risk assessment

Care Home Legionella risk assessment

Nursing Home Legionella risk assessment