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Originally Posted by land shark
Im no expert but the pool I use I believe uses bromine and the air exchange seems quite adequate. Also ozoneators are comming on fast. who knows maybe they are already near you.
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Then it is probably ok. Unfortunately all the pools I have used use chlorine, and some of them have very poor ventilation. My problem started soon after I started using a different pool from usual for swimming. It had poor ventilation and lots of chlorine. The children's pool was a murky brew of chlorine and dirt.
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Originally Posted by wet
Would it be correct to say they did not measure the air quality just slightly above the water surface (where swimmers typically breathe while doing laps), especially near the center of the pool? DDeden
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In another article it mentions that the air quality may be much worse at the surface of the water, so measurements in the pool building may not reflect what swimmers are actually breathing.
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The concentration of chlorine in the air is gradual, being highest at the water surface and least at the greatest distance from the surface. Chlorine concentration is also governed by the movement of air across the water surface (the greater the movement, the less the concentration of chloramines assuming that removed air is replaced by fresh air). Many modern pools are structured to not facilitate removal of escaping chlorine.
Some structural characteristics of pools increase chlorine concentrations near the water surface. Some examples are:
Indoor pools with recirculating air, rather than replacement with fresh air.
Indoor pools with low ceilings and inadequate air circulation.
Indoor pools with high sides that inhibit surface air ventilation.
These three features result in accumulated concentrations of THMs just above the water surface, that is, in the air that swimmers continually breathe. Admittedly, one swim in such a pool might not produce any health problems in a swimmer, but frequent users such as competitive age-group, school, college, and master's swimmers suffer extended periods of exaggerated breathing in the hyper-chlorinated micro atmosphere.
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