Swimming pool analysis.

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What is swimming pool analysis?

Swimming pool analysis is the process of monitoring and testing pool water to ensure it remains safe, clean, and compliant with UK health and safety regulations. Regular analysis helps operators manage disinfection, chemical balance, and microbiological quality to protect pool users and maintain effective operation of water treatment systems.

At Complii, we support pool operators with expert water analysis, risk assessments, and training services to help them meet the standards set out in the Health and Safety at Work etc. Act 1974, Managing health and safety in swimming pools (HSG179), and Pool Water Treatment Advisory Group (PWTAG) guidance.

Whether managing a public leisure pool, hotel, spa, or hydrotherapy facility, our services ensure your pool water remains hygienic, balanced, and fully compliant.

We're an accredited contractor

Why choose Complii?

How we can help.

Protect your people, property, and business. Here’s why we’re the right choice for swimming pool analysis.

Ensures compliance with health and safety law

Our testing and monitoring services help operators meet their legal duties under the Health and Safety at Work Act 1974 and align with the standards recognised by the HSE and PWTAG.

Protects the health of pool users

Routine chemical and microbiological testing reduces the risk of illness and infection, ensuring water is safe for swimmers and meets quality standards.

Optimises water treatment system performance

Regular analysis identifies imbalances or treatment failures early, preventing costly breakdowns and maintaining consistent disinfection and filtration performance.

Prevents corrosion and scaling

Monitoring factors such as pH, alkalinity, calcium hardness, and total dissolved solids helps prevent damage to pool surfaces and equipment.

Reduces operating costs

By maintaining balanced water and correct dosing levels, operators reduce chemical use, minimise waste, and extend plant life.

Provides clear data and documentation

Complii provides detailed reports and guidance following each test, giving operators the assurance and evidence needed for audits and inspections.

Your questions answered.

Chemical testing should be carried out before opening, every two hours during use, and after closing. Microbiological testing should take place monthly or more frequently if problems arise.
The Pool Water Treatment Advisory Group (PWTAG) provides detailed guidance on pool water management and treatment. Their standards are recognised by the HSE as the benchmark for effective pool operation.
Typical tests include free and combined chlorine, pH, alkalinity, calcium hardness, dissolved solids, and microbiological counts. These parameters ensure correct disinfection and balanced water.
Yes. Pool operators are legally required to carry out a risk assessment under the Health and Safety at Work etc. Act 1974 to identify and control potential hazards.
Yes. Complii offers specialist training to help operators and maintenance teams understand testing procedures, interpret results, and maintain compliance with safety standards.

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