Non-Chlorinated Swimming Pool – Possible?

A swimming pool by all means need to be chlorinated. So to say. Chlorine when applied into the pool, reacts with water and breakdown into many different chemicals. It formed chloramine by the reaction with ammonia. Chloramine causes the swimmers’ irritated eyes and unpleasant odor in swimming pool water. Other forms include hypochlorous acid (HOCl) and hypochlorite ion (OCl-). These kill microorganisms and bacteria in water. But the highest risk is linked to exposure to a contaminant found in chlorinated water called trihalomethanes (THMs) or chloroform which forms when chlorine reacts with organic material. THMs are a widely recognized carcinogen. Cancer causing agent.

Researchers report a mean chloroform uptake of 25.8 [micro]g/h for a swimmer at rest and 176.8 [micro]g/h) after 1 hour swimming.

I loved to swim. I swam 3-4 times a week in my early 30s. Inhalation of chloroform during swimming allows the uptake and exposure to this hazardous chemical through the route that, suspiciously, led to what I experienced years later. Nasal Pharyngeal Cancer. Truly? Not proven.

In 2002, I was given the opportunity to look into the non-chlorinated swimming pool system. Then again in 2007, another ‘natural pool’ was materialised in Bali with architect, Mr. Daryl Parker supported by Mr. Antony Rhodes of Oriental & Occidental Developments.

Can a non-chlorinated swimming pool sustain itself? There are many products in the market confidently advertised their effectiveness in the cleaning up the pool water of its pathogens, bacteria and many more unwanted characteristics without the application of chlorine. How about water clarity. Swimming pools have to be attractive as those seen with the application of chlorine displaying crystal clear water. Non-chlorinated pool as those that I have seen are ‘dirty’ looking with high concentration of suspended algae. Truly not inviting if this water quality is what can only be achieved without the use of chlorine.

In Bali, we designed the natural pool strongly incorporated the use of biological filtration system that we designed for fish ponds. This allows the pool water to appear clear and clean. The source that turn water to become green in color and turbid is nitrogeneous wastes like ammonia. No equipments in the market can effectively reduce nitrogeneous wastes except an effective biological filtration system. Even with this system, attached algae still flourish until a time where the bio-filter filtration efficiency reaches its maturity and gradually diminishes the growth of attached algae.