Legionella Water Testing and Assessment

A dependable approach to water safety and compliance

Stagnant pipework breeds Legionella bacteria, hot water tanks set to the incorrect temperature or scale build-up on outlets. All Legionella control documentation, including logbooks, test results, maintenance records, and risk assessments, must be retained for a minimum of five years and be readily available for inspection by enforcing authorities.

Smart PPM Fix

• Annual Legionella risk assessment and written control scheme

• Weekly flush of seldom-used outlets; record hot ≥ 50 °C, cold ≤ 20 °C

• Annual water samples sent for testing

• Monthly temperature checks

This procedure applies to all premises, systems, and personnel under the control of the organization where water is used or stored in a way that may present a risk of exposure to aerosolized Legionella bacteria, including:

• Commercial hot and cold water systems

• Showers and spray taps

• Calorifiers and storage tanks

• Cooling towers (if applicable)

• Any other equipment producing water aerosols

KPI: Zero positive Legionella samples; < 24 h.