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 »
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 »
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 »
GMS appointed to Fusion 21 Framework!
GMS Services Ltd is proud to be part of the new Fusion21 Building Safety and Compliance Framework – Lot 4: Legionella Monitoring and Control. Through this four-year framework, we offer nationwide coverage to the education, healthcare, and housing sectors, as well as to the broader public sector. The framework allows for both direct award contracts… Read more »
Jamie Green Joins GMS Services Ltd as Regional Director
We’re delighted to announce that Jamie Green has joined GMS Services Ltd as Regional Director, marking an exciting new chapter in our leadership team. Jamie brings with him a wealth of experience in the water hygiene and compliance sector, having previously led operations with distinction at Director level with another organsation. With a deep-rooted passion… Read more »
A Lid Alone Isn’t Enough – The Hidden Risks of Tank Neglect
This image serves as a striking example of why simply having a tank lid in place is not enough—and why routine inspection, maintenance, and hygiene controls are essential, as laid out in HSG274 Part 2. While the cold water storage tank shown here did have a lid fitted, it had clearly been neglected for a… Read more »
Staff Interviews April 2025
See what our staff think about GMS in the below video captured at our team away day 2025.
Lead Pipework: A Dual Threat to Water Safety
1. Lead Contamination and Health HazardsLead pipes, especially those that have aged or corroded, can leach toxic lead particles into the water supply. This contamination poses serious health risks—ranging from hypertension and gastrointestinal issues to irreversible neurological damage. Even low levels of lead exposure are harmful, particularly to children and pregnant women. 2. Legionella and… Read more »
How Often Should a Water Softener Regenerate?
A Simple Guide to Keeping Your System Efficient If you rely on a water softener at home, you may have wondered how often it should regenerate. The short answer: it depends. But getting the timing right can save water, reduce salt usage, and keep your system running smoothly. Let’s break it down. What Is Water… Read more »
