Why Dirty Water Systems May Show No Detectable Legionella: A Closer Look at Bacterial Dynamics and Mutations

In water hygiene management, it’s not uncommon to encounter heavily contaminated water systems that, despite appearing ideal for Legionella pneumophila proliferation, return negative results for Legionella during microbiological analysis. These situations often raise questions about sampling accuracy, environmental suitability, bacterial competition, and the complex behaviour of microbial communities under stress. High TVC, No Legionella: What’s… Read more »

When Should Cold Water Storage Tanks Be Cleaned?

Water Sustainability and the Need for Conservation With the growing pressures of population expansion, urbanisation, and the global climate crisis, the demand for water resources is increasing at an unsustainable rate. Projections indicate that by 2050, an additional 4,000 million litres of water per day—equivalent to approximately 1,600 Olympic-sized swimming pools—will be required to meet… Read more »

Increasing Water Hygiene Risks – Water System Components: Showers, Outlets and Terminal Fittings

High-Risk Water System Components: Showers, Outlets and Terminal Fittings Flexible Hoses: Technical Considerations for Water Hygiene and Legionella Risk Management In accordance with HSG274 Part 2, Section 2.31, the use of flexible hoses in domestic water systems presents a recognised risk factor for Legionella proliferation, particularly when hoses are of poor construction quality or installed… Read more »

Tender Win – NW Ambulance Services NHS Trust

We have been sucessful with a recent tender bid to deliver Water Hygiene services to North West Ambulance Service NHS Trust. We will be delivering Legionella risk assessments, PPM services and remedial services. The service covers Cumbria, Lancashire, Greater Manchester, Merseyside & Cheshire and will include around 100 Ambulance stations. The service will commence from… Read more »

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Supporting Safer Care Homes with Expert Water Hygiene & Plumbing Services

At GMS Services Ltd, we understand that maintaining safe and compliant water systems in care homes isn’t just about meeting regulations—it’s about protecting lives. Vulnerable residents, including the elderly and those with underlying health conditions, are at a higher risk of waterborne illnesses like Legionnaires’ disease, Pseudomonas, and Nontuberculous Mycobacteria (NTM). That’s why we provide… Read more »

Hot Tubs and Legionella: What You Need to Know

Understanding Legionella Legionella bacteria naturally occur in freshwater environments but become problematic when they grow in man-made water systems like hot tubs. The bacteria multiply in warm water, particularly between 20°C and 45°C, making hot tubs an ideal breeding ground. Inhalation of contaminated water droplets or aerosols can lead to infection. Why Hot Tubs Are… Read more »