How modern filtration is transforming swimming pool water quality

Crystal-clear swimming pool water doesn't happen by accident. Behind every inviting pool is a carefully balanced combination of filtration, circulation and water treatment working together to keep the water clean, safe and comfortable for swimmers.

For many years, maintaining excellent water quality has relied heavily on disinfectants such as chlorine, ozone and ultraviolet (UV) treatment. These continue to play an important role in keeping swimming pools safe and enjoyable, and when professionally maintained, they provide excellent results.

However, advances in filtration technology now offer pool owners additional options for achieving exceptional water quality. Rather than relying solely on chemicals to eliminate bacteria after they develop, modern systems focus on creating conditions where bacteria struggle to thrive in the first place. The result is cleaner water, lower chemical consumption and a more enjoyable swimming experience.

One of the most significant developments in recent years is the DAISY+ system, an innovative approach to water treatment that combines advanced filtration with intelligent water management to complement more traditional methods of maintaining swimming pool water.

Why traditional pool treatment has its limitations

Conventional swimming pool water treatment works by disinfecting the water to destroy bacteria and other harmful microorganisms. Chlorine remains one of the most effective and widely used disinfectants, and it continues to play an essential role in maintaining safe swimming conditions.

However, traditional systems often require higher levels of chemicals because bacteria can establish themselves within the filtration system before being treated. As bacteria multiply, more disinfectant is required to maintain water quality, increasing chemical consumption and producing unwanted by-products such as chloramines, which are responsible for the familiar ‘chlorine smell’ associated with some swimming pools.

While these systems are highly effective, advances in filtration technology now allow pool owners to take a more preventative approach by reducing the conditions that encourage bacterial growth in the first place.

A biological approach to cleaner water

The philosophy behind DAISY+, developed by Dryden Aqua, is refreshingly simple: instead of supporting bacterial growth and then treating it later, the system changes the conditions within the filtration process to make it difficult for bacteria and parasites to live and reproduce.

By preventing bacterial growth at the source, DAISY+ helps improve water clarity, reduce water treatment costs and provide healthier swimming conditions.

Rather than working harder to eliminate contamination after it develops, the system focuses on preventing contamination from becoming established in the first place.

This preventative approach represents an important evolution in swimming pool water treatment.

How the DAISY+ system works

At the heart of the system is AFM® (Activated Filter Media), a highly engineered filter media manufactured from activated recycled glass rather than traditional sand.

Unlike conventional sand filters, AFM® is self-sterilising and bio-resistant, helping to prevent the formation of harmful biofilm while reducing the production of undesirable disinfection by-products such as trichloramines and THMs (Trihalomethanes). The result is cleaner, clearer water in both indoor and outdoor pools, while indoor pools also benefit from improved air quality and reduced chlorine odours.

AFM® also offers certified filtration down to one micron, capturing extremely fine particles that would typically pass through traditional filtration media. This contributes to exceptionally clear water while maintaining excellent filtration efficiency over many years.

The system is complemented by DA-GEN, an advanced water treatment technology that optimises water chemistry using low levels of carefully controlled oxidising agents alongside natural UV energy. Working together, the two technologies create a highly effective integrated water treatment solution.

The benefits for pool owners

While the technology behind DAISY+ is impressive, the real advantages are the practical benefits experienced by pool owners.

• Crystal-clear water: Superior filtration removes microscopic particles more effectively, resulting in sparkling water that looks cleaner and more inviting throughout the swimming season.

• Reduced chemical consumption: By preventing bacterial growth within the filtration system, DAISY+ can reduce the demand for chemical treatment, helping to lower ongoing operating costs while maintaining excellent water quality.

• Improved swimmer comfort: Lower levels of chloramines mean less chlorine odour and a more pleasant swimming environment. Many swimmers also notice reduced eye irritation and greater comfort in the water.

• Better environmental performance: The system requires less backwash water than conventional filtration media, helping to conserve water while also reducing energy consumption.

• Long-term efficiency: Because AFM® resists bacterial growth and channelling within the filter bed, it maintains its filtration performance over a much longer period than traditional sand media, helping to reduce maintenance requirements and improve long-term reliability.

Looking beyond today's pool technology

Swimming pool technology has advanced significantly over the past decade. Today's pool owners expect more than just safe water - they want crystal-clear water, lower operating costs, greater sustainability, and a more comfortable swimming experience.

Innovations such as DAISY+ demonstrate how the industry is evolving towards preventing problems before they occur rather than simply treating them afterwards. It's an approach that benefits not only water quality but also the long-term efficiency and enjoyment of the pool.

Why London Swimming Pool Company recommends DAISY+

At London Swimming Pool Company, we specify, install and maintain a wide range of swimming pool filtration and water treatment systems. Every pool is different, and the most appropriate solution will always depend on the individual pool, its usage and the client's requirements.

DAISY+ is one of the advanced technologies we recommend when appropriate, as it combines outstanding filtration with an intelligent approach to water treatment, enabling many pool owners to enjoy exceptional water quality with lower chemical consumption and improved operating efficiency.

Whether you are planning a new swimming pool, refurbishing an existing one or simply looking to improve your current filtration system, our experienced team can advise on the most suitable solution for your pool. With expert guidance and the right technology, it is possible to achieve beautifully clear water that is safe, comfortable and straightforward to maintain for years to come.