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Maximizing Pool Hygiene: The Crucial Role of UV Systems in Modern Aquatics

Maximizing Pool Hygiene: The Crucial Role of UV Systems in Modern Aquatics

In the ever-evolving landscape of pool water sanitation, the adoption of Ultra Violet (UV) systems has proven to be a game-changer for combating chlorine-resistant pathogens, with a primary focus on the notorious cryptosporidium. This microscopic menace, equipped with a resilient shell, can withstand high chlorine levels for extended periods, posing a persistent threat to pool hygiene.

Originally employed in industrial settings, UV systems made their way to aquatics to address this growing concern. However, the effectiveness of traditional filter systems, such as DE, perlite, or glass filters, was compromised with the shift to fast sand filters since the 1980s. Unlike their predecessors, these filters only capture particles down to the 20-micron range, allowing cryptosporidium to elude filtration and potentially spread infections in the pool.

The urgency of maintaining operational UV systems cannot be overstated. A minimum UV dose of 60mj/cm² is crucial to disrupt the DNA of parasites, rendering 99.9% of them incapable of infecting or reproducing. Resorting to partial bypassing of the UV system to maintain flow is strongly discouraged, as untreated water can persist in circulation, compromising the overall effectiveness of the system.

Beyond pathogen control, maintaining UV levels at 60mj/cm² offers additional benefits. It aids in the breakdown of chloramine byproducts, contributing to a healthier environment for swimmers and staff. Furthermore, it reduces the notorious “chlorine” smell associated with aquatic centers and helps mitigate corrosion of metal products within the pool, thus enhancing facility longevity.

Issues affecting UV systems, such as reduced light levels at sensors, often stem from contamination of the sleeve or UV window by grease or iron. Regular cleaning using appropriate products is crucial for optimal performance. Additionally, considering the Ultraviolet Transmittance (UVT) of water is essential, as higher turbidity or dissolved solids can impede UV transmission. Investing in slightly oversized UV systems that can adjust output based on water conditions is recommended for maintaining optimal efficacy.

Daily monitoring of UV dosage levels as part of the water testing procedure is a prudent practice. Keeping spare bulbs, sleeves, wipers, and UV windows on hand ensures minimal downtime in the event of issues. For ongoing support and guidance, reach out to our dedicated team – your partners in ensuring the highest standards of pool hygiene and safety.


Submitted by Jim Todhunter

DB Perks and Associates Ltd. DBA Commercial Aquatic Supplies




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