Research Confirms Link Between Chloramines In Pools And Asthma In Children
A new study in Belgium has confirmed earlier research linking chlorine by-products in indoor swimming pools with asthma in children1, 2.
The researchers from the Catholic University of Louvain analysed the rates of wheezing, asthma and other ailments in almost 190,000 13 and 14 year olds in 21 European countries. The results showed rates of asthma and wheezing rose by around 2.7% and 3.39% respectively among regular indoor pool users.
The researchers say the results may be at least partly due to chlorine by-products, known as chloramines, which are formed when chlorine reacts with sweat or urine in the pool water. Chloramines are powerful irritants responsible for the unpleasant smells and eye irritation often experienced at indoor pools.
In their earlier study in 2003, the researchers said the problem was potentially so serious that pool operators should seriously consider alternatives to chlorine-based disinfection.
A leading alternative to chlorination which is becoming increasingly popular is UV disinfection. While small residual amounts of chlorine are still necessary with UV treatment, these can be kept to an absolute minimum. Not only is UV extremely efficient at killing all water- and air-borne pathogens, it also destroys any chloramines caused by the residual chlorine. This results in a healthier environment with none of the unpleasant side effects commonly associated with chlorinated pools. UV-treated pool water is usually also much clearer.
Hanovia UV disinfection systems are compact and can usually be installed within existing pipework. Operation and maintenance is simple and can easily be carried out by on-site staff. Reduced chlorine usage also results in significant cost savings for the pool operator, as well as cutting down on chemical handling.
References:
1. Nickmilder, M., and Bernard, A. (2006). Ecological association between childhood asthma and availability of indoor chlorinated swimming pools in Europe. Occupational & Environmental Medicine, July 2006, Volume 63, doi:10.1136/oem.2005.025452.
2. Bernard, A. M., Carbonnelle, S., Michel, O., Higuet, S., de Burbure, C., Buchet, J-P., Hermans, C., Dumont, X., and Doyle, I. (2003). Lung hyperpermeability and asthma prevalence in schoolchildren: unexpected associations with the attendance at indoor chlorinated swimming pools. Occupational & Environmental Medicine, June 2003, Volume 60, 385-394.
