Frequently Asked Questions

Find answers to common questions about Legionella sampling and testing

What is Legionella and why is it dangerous?

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Legionella is a bacterium that can cause Legionnaires' disease, a serious form of pneumonia. It thrives in water systems between 20-45°C and can be inhaled through water aerosols from showers, taps, cooling towers, and spa pools. Regular sampling and testing helps ensure your water system is safe and compliant with HSG 274 Part 2 guidelines.

How often should I test for Legionella?

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Testing frequency depends on your risk assessment and system type. Generally, high-risk systems like cooling towers require monthly testing, while lower-risk domestic systems may need quarterly or annual testing. We can help you determine the appropriate frequency for your specific situation based on HSG 274 Part 2 guidance.

What does a Legionella test involve?

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We provide you with sterile sampling bottles and clear instructions on how to take representative samples from your water system. Samples are typically taken from key locations like cold water tanks, hot water cylinders, showers, and taps. Once collected, samples are sent to our UKAS-accredited laboratory for analysis, with results typically available within 10-14 days.

What happens if Legionella is detected?

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If Legionella is detected, we provide clear guidance on the required remedial actions. This may include system disinfection, temperature adjustments, or other control measures. We'll help you understand the results, implement corrective actions, and arrange post-treatment verification sampling to confirm the system is back within safe limits.

Can I take samples myself?

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Yes! Our service is designed for organisations that want to manage sampling in-house. We provide detailed instructions, sterile sampling equipment, and expert support to ensure you take representative samples correctly. This is a cost-effective approach for businesses already managing basic water hygiene tasks internally.

What other water tests do you offer?

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In addition to Legionella testing, we offer Total Viable Count (TVC), Potable Water Testing, and Pseudomonas testing. These tests help provide a complete picture of your water quality and are often required for specific environments like dental practices, hydrotherapy pools, and spa facilities.

How does subscription delivery work?

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Our subscription service automatically delivers testing kits at your chosen interval (monthly, quarterly, etc.). You'll receive sample bottles at the right time with reminders to take samples, ensuring your testing programme stays on track. Subscriptions include a 10% discount and can be paused or cancelled at any time.

Are your laboratories accredited?

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Yes, all testing is carried out by UKAS-accredited laboratories to ISO 17025 standards. This ensures reliable, accurate results that are legally defensible and accepted by regulatory bodies. Our reports meet all HSE requirements and provide clear, actionable information.

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