Dramatic Improvement in Water Quality at Independent School’s Swimming Pools since installing Hanovia UV Disinfection System

Since installing Hanovia UV disinfection systems for its two indoor swimming pools, the Royal Russell School in Surrey, one of Britain’s most prestigious independent schools, has seen a dramatic improvement in both water and air quality. There has also been a significant reduction in chemical usage.

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(Photo caption 1: The Royal Russell School’s two indoor swimming pools)

As bather loads have been increasing year on year and eventually surpassed the pools’ original design load capacity, Pool Manager Bob Ellis felt that the water treatment system needed an upgrade. He therefore opted for UV, not only because of the improved disinfection it offers, but also because of its primary advantages: no more ‘chlorine smell’ and sore eyes (caused by chloramines), lower running costs and easier operation. An additional advantage is that UV can help lower TDS (Total Dissolved Solids) levels, which are difficult to control with a ‘chemical only’ pool treatment system. UV is also highly effective against Cryptosporidium, a microorganism that is notoriously resistant to chlorine.

UV is well known for reducing both TDS levels and chloramines (also known as combined chlorines) – the unpleasant chemicals formed when chlorine combines with the organic compounds deriving from human use of the water. Chloramines are also very corrosive of metal building structures. High TDS or chloramine levels often also mean cloudy, murky water.

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(Photo caption2: The Hanovia UV system in the plant room of the Royal Russell School)

“We always managed to keep chloramine levels quite low (typically about 1.0ppm) even before we started using UV,” commented their Engineering Services Manager. “Since UV was installed, however, chloramine levels are as low as 0.2ppm, which has significantly improved both water and air quality. TDS levels have also halved since UV was introduced, which means the water is now much clearer. Pool users have really noticed and commented on the improved pool atmosphere. In fact, it actually helps attract more customers.”

Continuing, Bob Ellis said: “The fact that we have all these benefits without the staff having to interact significantly with the Hanovia UV system is a major advantage. They all have other duties, so knowing that they can rely on the system to just work effectively in the background has tangible value. Staff simply check the Hanovia system’s control panel once a day and log the parameters to record usage and condition. Over the past 18 months we have needed to do nothing more.”

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