Category: Water System Management

  • The Hidden Legionella Risk Sitting Behind Closed Doors

    How little-used outlets and stagnant water quietly create problems in buildings Walk around almost any building and you’ll find them. The shower in a changing room nobody uses anymore. The sink in a meeting room kitchen staff forgot existed. The tap in a spare office, an unused hotel room, or a healthcare room waiting for…

  • TMVs: Protection vs Risk — Getting the Balance Right

    Thermostatic Mixing Valves (TMVs) play an important role in modern water systems. They are designed to reduce the risk of scalding by blending hot and cold water to a safe outlet temperature, particularly in higher-risk environments such as healthcare premises, care homes, schools, hotels, and public facilities. However, while TMVs improve user safety, they can…

  • Cold Water Storage Tanks: When Are They a Legionella Risk?

    Cold water storage tanks are a common feature in many commercial and older buildings across the UK. When properly maintained, they play an important role in supplying water throughout a system. But when things go wrong, they can quickly become one of the highest Legionella risk assets on site. So, when does a cold water…

  • What Are Adequate Schematics for Legionella Management? (UK Compliance Guide)

    When it comes to managing Legionella risk, one of the most overlooked but essential elements is having accurate and adequate water system schematics. Many small businesses and landlords either: And that’s where problems begin. 🔍 What Is a Legionella Schematic? A Legionella schematic is a simple drawing that shows how water moves through your building.…

  • What Temperature Kills Legionella? (UK Guidelines Explained)

    Introduction Legionella bacteria can pose a serious health risk in water systems — especially in buildings with complex plumbing. One of the most effective ways to control it is temperature control. But what temperature actually kills Legionella? In this guide, we break down the exact temperatures you need to know, based on UK guidance, and…

  • No Written Scheme of Control: A Common Legionella Compliance Failure

    One of the most common issues I come across when carrying out Legionella risk assessments is surprisingly simple: There is no written scheme of control in place. The site may have: …but no clear, structured plan explaining how Legionella risk is actually being managed. And that’s a problem. What Is a Written Scheme of Control?…