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Episode 1

Biofilm The Hidden Enemy

You can’t always see it. But it’s still a risk.

Biofilm is a slimy layer that can build up inside water systems, providing a breeding ground for bacteria, including Legionella.

Our latest Legionella Busters episode explains why biofilm is one of the biggest challenges in water hygiene - and what you can do to manage it.

Plant room with cold water storage pipework and valves

In this episode, our team explains:

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Stagnation is the real enemy

Cold water storage tanks are one of the most common sources of non-compliance we find on site — and almost always for avoidable reasons. In this episode we walk through a real inspection and explain what a competent assessor is looking for before they even lift the lid.

Oversized tanks, low turnover and poor pipework design all contribute to water sitting still for longer than it should. We cover practical ways to improve turnover without replacing the whole asset.

Quick wins for duty holders

Screened vents and overflows, tight-fitting lids, insulation checks and temperature monitoring at the point of entry will resolve the majority of the findings we raise on schools and care settings.

Good water hygiene isn’t achieved through one action — it’s the result of consistent management, good procedures and competent people.

Legionella Busters says:

Small actions. Big impact.

Safe water starts with good management.

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Read the full episode on LinkedIn

Practical tips and expert advice from this episode.

Free legionella compliance checklist

Review whether your organisation has the key controls in place.

Risk assessments

Documentation

Temperature monitoring

Control measures

Cleaning and disinfection

Training

Water sampling

Corrective actions

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What should the Legionella Busters tackle next?

We’d love to hear your suggestions. Let us know in the comments on LinkedIn.

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© 2026 Managed Water Services Ltd. All rights reserved.
© 2026 Managed Water Services Ltd. All rights reserved.