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Water hygiene services

UKAS laboratory services.

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UKA laboratory services
Our services

What are UKAS laboratory services?

UKAS laboratory services provide accredited microbiological and chemical testing to verify the safety, quality, and compliance of your water and air systems. These tests form a vital part of maintaining safe environments, confirming that control measures are effective and regulatory requirements are being met.

At Complii, our UKAS-accredited laboratories offer a full suite of microbiological and chemical analyses tailored to your systems and site needs. Whether you require testing for Legionella, Pseudomonas, or general water chemistry, our laboratory services deliver accurate, reliable data supported by expert consultancy and actionable insight.

We're an accredited contractor
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  • Legionella control association logo
  • CHAS logo
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  • Facilities line gold member logo
  • BSRIA logo
  • LPCB UKAS ISO 9001 logo
  • Safe contractor logo
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Why choose Complii?

How we can help.

Protect your people, property, and business. Here’s why we’re the right choice for UKAS laboratory services.

Full regulatory compliance

All analysis is performed in accordance with UKAS, HSE ACoP L8, HSG274, and Drinking Water Inspectorate (DWI) standards, ensuring every result meets legal and industry requirements.

Reliable microbiological analysis

We provide testing for Legionella, Pseudomonas, total viable counts (TVC), coliforms, and E. coli, helping you maintain safe and compliant water and air systems.

Comprehensive chemical testing suites

Our laboratories perform full physico-chemical analyses, including pH, metals, conductivity, nitrates, and hardness testing, giving a complete view of system health.

Expert interpretation and consultancy

Our microbiologists and chemists provide detailed analysis and clear recommendations, helping you understand your results and take the right corrective actions.

Tailored testing programmes

We design analytical suites around your operational and compliance requirements, whether for routine monitoring, incident response, or validation of water treatment systems.

Advanced technology and quality assurance

Using state-of-the-art instrumentation and rigorous quality control procedures, our laboratories ensure every result is accurate, traceable, and fully validated.

Your questions answered.

  • UKAS accreditation confirms that our laboratory operates to recognised standards of quality and technical competence, ensuring reliable and consistent results.

  • We analyse water and air samples from a wide range of environments, including cooling systems, domestic water supplies, closed systems, and workplace air quality tests.

  • Yes. We offer a full range of microbiological testing for bacteria such as Legionella and Pseudomonas, alongside chemical analyses for metals, pH, and water quality parameters.

  • Turnaround times vary depending on test type, but we prioritise fast and accurate reporting, with urgent testing available where required.

  • Absolutely. Our experts interpret the findings, highlight potential risks, and recommend corrective actions to maintain compliance and control.

  • Yes. All laboratory reports are UKAS-endorsed and formatted for inclusion in compliance records, audits, or water safety management plans.

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Compliance with confidence.

Get in touch for a tailored quotation that fits your site’s needs.