That study seems dubious -- they mention that they measured free chlorine with a DPD test, and they also say that they measured chloramines with a colorimeter and the DPD test. This seems quite odd -- the distinguish between free and combined chlorine (which mostly means chloramines), a better test such as FAS-DPD should be used. So I don't see how the study determined what the cause of the problem was, but it certainly spends quite a bit of time explaining how chloramines can be problematic.
Anyway, chloramines can be controlled to some degree. The use of stabilizers (cyanuric acid) can reduce the amount of nitrogen trichloride (the worst chloramine) in the water by a considerable amount. As I understand it, the factors that make the biggest difference, though, are maintaining adequate chlorination and exposure to UV light. UV light (from the sun or a UV lamp) breaks down chloramines. So the best solution is to swim in an outdoor pool :)
(The FAS-DPD test is a standard test kit you can buy from ay reputable dealer. It's a titration, not a colorimetric measurement, so no fancy equipment at all is needed.)
Anyway, chloramines can be controlled to some degree. The use of stabilizers (cyanuric acid) can reduce the amount of nitrogen trichloride (the worst chloramine) in the water by a considerable amount. As I understand it, the factors that make the biggest difference, though, are maintaining adequate chlorination and exposure to UV light. UV light (from the sun or a UV lamp) breaks down chloramines. So the best solution is to swim in an outdoor pool :)
(The FAS-DPD test is a standard test kit you can buy from ay reputable dealer. It's a titration, not a colorimetric measurement, so no fancy equipment at all is needed.)