The Critical Importance of Water Hygiene Planned Preventative Maintenance (PPM) in Healthcare Settings

In healthcare environments—where vulnerable patients rely on safe, clean surroundings—water hygiene is not just a compliance issue; it’s a critical aspect of patient safety and infection control. Planned Preventative Maintenance (PPM) for water systems is an essential strategy to prevent microbial contamination, protect at-risk individuals, and meet stringent regulatory standards. What is Water Hygiene PPM?… Read more »

Contract News!

GMS is proud to announce that we have been awarded a new contract to deliver Legionella Services for Bolton Council over the next three years. This marks a continuation of a longstanding relationship with Bolton Council, spanning 19 years through both direct contracts and partnerships with FM providers. We are now delighted to be reappointed… Read more »

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 »

Expansion Vessels in Water Systems: Purpose, Design, and Good Practice

Expansion vessels are widely used in both domestic and commercial water systems to help manage pressure changes and protect system components. When correctly selected, installed, and maintained, they contribute to system stability, equipment longevity, and compliance with safety expectations. This article explains why expansion vessels are used, how they operate, and what good practice looks… Read more »

Contract Win News!

We have been sucessful with a recent tender bid to provide services to Knowsley Council. GMS have been awarded a 3 year term contract to provide Legionella Risk Assessments, Legionella and Water Hygiene PPMs, Training and Remedial Services. We are excited to get started with another local authority based in NW England. This Council is… Read more »

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Commercial Water Pressure Problems: Causes and Solutions

Understanding Water Pressure Issues in Commercial Buildings Consistent water pressure is essential for the safe and efficient operation of any commercial building. Whether it’s a healthcare facility, school, hotel, office block, or industrial site, inadequate or excessive water pressure can cause operational disruption, equipment damage, user complaints, and increased maintenance costs. Many pressure-related issues develop… Read more »

GMS Spring Team Day 2026

Yesterday we got the whole GMS team together for our latest company day — and it was a great mix of learning, teamwork, and a bit of fun competition. We kicked things off in the morning with anti-harassment and mental health training, reinforcing how important it is to maintain a supportive and respectful workplace for… Read more »

More great feedback about #TeamGMS

👉 Another fantastic piece of feedback from one of our hospital clients in the South West—received by one of our directors. #healtcare #respect #dignity #workethic #communication #staff #culture #legionella #waterhygiene #commercialplumbing Hi Jamie,  Do hope you are well?  We had Ryan, Niall and Aarron on site these past two weeks. We just wanted to express… Read more »

Why are males more susceptible to Legionellosis?

Why are males more susceptible to Legionellosis? Males are consistently reported to have a higher incidence of Legionnaires’ disease than females — typically 2–3 times higher. This is due to a combination of behavioural, biological, and environmental factors: 1. Higher exposure risk 2. Pre-existing health conditions 3. Biological / immune differences 4. Lung capacity (possible… Read more »