While the UK’s summer may not be breaking heat records, even a slight rise in temperatures can create the ideal conditions for Legionella bacteria to thrive within your building’s water systems.
Why Legionella Loves a Warmer Summer (Even in the UK!)
Legionella bacteria are opportunistic pathogens, meaning they take advantage of favorable conditions to multiply. Warmer weather, even within the usual UK summer range, can cause water temperatures to rise, especially in systems with less frequent use or those exposed to sunlight. This creates a breeding ground for Legionella, increasing the risk of contamination and potentially leading to Legionnaires’ disease outbreaks.
The Office Legionella Hotspots

Little-Used Outlets: Water stagnation in infrequently used taps, showers, or appliances can encourage Legionella growth.
Underutilised Water Heaters: During summer months, hot water usage often decreases, leading to lower temperatures in water heaters and increasing the risk of bacteria proliferation.
Cooling Towers: These systems, often found in larger buildings, are particularly susceptible to Legionella growth due to their warm, stagnant water conditions.
Don't Be Caught Unaware
As a business owner or facility manager, it’s your responsibility to ensure the safety of your premises and the people within them. Here’s how to proactively manage Legionella risks during warmer weather:
- Regular Testing: Schedule routine Legionella testing with a qualified professional to identify any contamination and ensure compliance with regulations.
- Temperature Monitoring: Closely monitor water temperatures in your systems to ensure they remain within safe ranges.
- Flushing Procedures: Implement regular flushing procedures for infrequently used outlets to prevent water stagnation.
- System Maintenance: Keep your water systems well-maintained and address any leaks or malfunctions promptly.
Aqua Engineering: Your Legionella Experts
Aqua Engineering is here to help you safeguard your business against Legionella risks. We offer comprehensive risk assessments, water testing, and tailored control measures to keep your water systems safe and compliant.
Contact us today for a free consultation and ensure the well-being of your staff and customers, even as temperatures rise.
The Way Forward
The path to a safer, more compliant business environment is paved with education and awareness. Legionella might be a hidden threat, but the solutions are clear, accessible, and effective. Aqua Engineering’s online legionella awareness training course represents a crucial step forward for small businesses. By embracing this training, businesses not only shield themselves against legal and health risks but also demonstrate a commitment to the highest safety standards. In the end, it’s about more than just compliance; it’s about fostering a culture of care and responsibility that permeates every aspect of business operations.