Thermostatic Mixing Valves (TMVs): Understanding TMV2, TMV3 and Your Legal Responsibilities
Thermostatic Mixing Valves (TMVs) play a critical role in controlling water temperature and reducing the risk of scalding in both domestic and commercial buildings. In higher-risk environments such as healthcare, care homes and education settings, correct valve selection, installation and ongoing maintenance is not just best practice – it is a legal and moral responsibility…. Read more »
How Passing TMVs Drive Legionella and Biofilm Formation
Passing TMVs create the exact conditions Legionella bacteria thrive in. The combined effects include: Once temperature control is lost, biofilm rapidly develops on internal pipe surfaces. Biofilm acts as: As biofilm thickens, it further restricts flow, worsening stagnation and creating a self-reinforcing cycle that accelerates colonisation. In many investigations of persistent Legionella positives, passing TMVs… Read more »
Meet our two Colleagues of the Year!
Winner – North Team: Maddie Smout It is with huge pleasure that we announce Maddie Smout as this year’s Colleague of the Year for the North team, an award that is entirely driven by colleague nominations, making it all the more meaningful. The feedback received about Maddie was overwhelming, consistent, and incredibly heartfelt. Time and… Read more »
Why Hot Water Circulation Failures Remain the Hidden Weakness in Legionella Risk Assessments and Where Remote Monitoring Fits In
Hot water circulation, or more accurately the absence of it, remains one of the most critical areas of focus for any competent Legionella risk assessor. Despite its importance, it continues to be overlooked in the majority of risk assessment documents produced across the industry. Alarmingly, this issue is not confined to inexperienced assessors; it appears… Read more »
Remote Monitoring Redefined: The GMS Advantage
At GMS, we are pushing beyond traditional temperature monitoring and redefining what connected compliance means for modern buildings and estates. Our goal is simple: use intelligent monitoring to identify risks as they develop, not after they have already happened. From Routine Checks to Real-Time Control Conventional water safety checks rely on manual readings taken every… Read more »
GMS Autumn Team Day – Celebrating Teamwork, Wellbeing, and 25 Years of Leadership
On 7th October 2025, the GMS team came together for our Autumn Team Day — the second of our twice-yearly events designed to bring our people together, strengthen our shared values, and celebrate our successes. The day combined a variety of activities including training sessions, games, a team quiz, and even a few competitive padel… Read more »
Water Hygiene & Plumbing for Block Management | GMS
GMS deliver trusted water hygiene, plumbing, unvented hot water servicing & cold water tank replacements for block management companies across the UK. Why GMS Are the Trusted Choice for Block Management Companies When it comes to water hygiene, commercial plumbing, and unvented hot water servicing, block management companies need a partner who not only understands… Read more »
BS 8558: The Standard Guiding Safe Water Hygiene in Commercial Buildings
Ensuring safe and hygienic water systems is a critical responsibility for all building owners, facilities managers, and duty holders. In the UK, BS 8558 provides clear guidance on the design, installation, testing, and maintenance of domestic hot and cold water services – and its principles are central to preventing issues such as Legionella proliferation. What… Read more »
From West Tower to Contour — GMS behind the water systems powering “Manc-hattan”
In 2018, our journey with Renaker’s skyline began at West Tower topping out that year and completing in 2019 — the first piece of the Deansgate Square cluster. Since then, GMS has been trusted to commission every new Renaker tower in Manchester and to keep them performing day-in, day-out with ongoing water hygiene: tank maintenance… Read more »
The Importance of Point-of-Use (POU) Filters in Managing Legionella Risks
When sites experience ongoing positive Legionella results, swift action is essential to protect building users. While long-term solutions such as remedial works, system modifications, or improved control measures are investigated, an immediate risk still exists. This is where Point-of-Use (POU) filters play a vital role. Why POU Filters Matter POU filters are designed to fit… Read more »
