Legionella Testing, UKAS Laboratory Analysis
Water sampling and analysis is a critical part of any effective legionella control programme, helping to verify that control measures are working and that water systems remain safe and compliant.
At KWS Ltd, we provide professional water sampling services across the UK, with all samples analysed by a UKAS accredited laboratory and delivered to the lab on the same day they are taken, ensuring accuracy, integrity and reliable results.
What is Legionella Water Sampling?
Legionella water sampling involves collecting water samples from key points within a system to test for the presence of Legionella bacteria and other microbiological indicators. It is typically required where there is increased risk, suspected issues, or as part of a routine monitoring programme.
Sampling is carried out in line with recognised industry standards to ensure results are valid, repeatable and suitable for demonstrating compliance.
Standards & Compliance
All sampling is undertaken in accordance with relevant UK guidance and British Standards, including:
- BS 7592:2022 – Sampling for Legionella bacteria in water systems
- HSE ACoP L8 and HSG274 guidance
- HTM 04-01 requirements for healthcare environments
These standards ensure that sampling methods, handling and transportation are carried out correctly, minimising the risk of inaccurate or misleading results.
UKAS Accredited Laboratory Testing
All samples are analysed by a UKAS accredited laboratory, providing assurance that testing is carried out to the highest recognised standards.
Using a UKAS lab ensures:
- Reliable and defensible results
- Compliance with regulatory expectations
- Confidence during audits and inspections
- Accurate identification and quantification of legionella bacteria
Same-Day Sample Delivery
To maintain sample integrity, all water samples are delivered to the laboratory on the same day they are taken.
This is critical for:
- Preventing deterioration or contamination
- Ensuring accurate legionella or bacteria counts
- Meeting best practice requirements for microbiological testing
Our efficient logistics and planning ensure that samples are handled correctly from collection through to analysis.
Types of Water Sampling We Provide
We carry out a wide range of water hygiene sampling services, including:
- Legionella sampling (routine, investigative and post-remedial)
- Potable water testing including TVC/E.coli & Coliforms, taste & odour, metals
- Closed system sampling (heating and chilled systems)
- Pre-commissioning and post-disinfection sampling
- Healthcare and HTM 04-01 sampling regimes
Sampling programmes can be tailored to suit your risk level, system type and regulatory requirements.
Clear Reporting & Expert Guidance
Following analysis, we provide clear and concise reports with interpretation of results and practical recommendations where required.
We don’t just provide results—we help you understand:
- What the findings mean
- Whether action is required
- What the next steps should be to maintain compliance
Why Choose KWS Ltd?
KWS Ltd provides an independent and professional approach to water sampling and legionella testing, combining technical expertise with fast turnaround and reliable service.
- Independent advice with no unnecessary upselling
- Over 20 years’ experience in water hygiene and compliance
- UKAS laboratory testing for full confidence in results
- Same-day sample delivery to maintain accuracy
- Clear, practical reporting and support