Frequently Asked Questions
Is Legionella sampling a legal requirement?
Not always. HSG 274 Part 2 and ACOP L8 recommend sampling where appropriate — for example, when systems are complex, control measures are in doubt, or after significant changes. It’s a verification tool to confirm your system is under control.
How often should I take Legionella samples?
Frequency depends on your risk assessment. Many clients choose quarterly or annual reassurance sampling, but it may be more frequent for higher-risk systems. We can advise based on your setup and usage.
Can I take the samples myself?
Yes — our kits include clear step-by-step instructions so you can collect samples safely and correctly. We handle the laboratory analysis and interpret the results for you.
What’s included in the Legionella sampling kit?
Each kit includes sterile sample bottles, easy-to-follow sampling guidance, a pre-paid return label, and laboratory analysis. Results are reviewed by our specialists and provided in a clear, concise report.
How long do results take?
Legionella culture testing typically takes 10–12 days, as required by UKAS laboratory standards. TVC and potable samples are usually reported within 3–5 days.
What happens if Legionella is detected?
If results exceed action levels outlined in HSG 274 Part 2, we’ll contact you promptly to explain the findings and recommend appropriate next steps, such as flushing, disinfection, or further review.
Are your laboratories accredited?
Yes. All testing is conducted through UKAS-accredited laboratories, ensuring quality, accuracy, and compliance with recognised standards.
Can sampling replace temperature checks or maintenance?
No — sampling supports, not replaces, your regular control measures. It confirms your ongoing controls (temperature management, flushing, disinfection, etc.) are effective.
Who should consider reassurance sampling?
Any organisation that wants confidence their water system remains safe — especially after cleaning, refurbishment, or periods of low use. It’s also ideal for clients managing some PPM tasks in-house who want expert verification.
How do I interpret the results?
You don’t need to — we’ll do it for you. Each report includes clear explanations, result categories, and guidance on whether any action is required.