Burning Eyes and Nose
If the swimmers complain about burning eyes and nose, or dry, irritated skin, there is most certainly a problem with the pool water chemistry.
This could be caused by various factors:
By testing the swimming pool water and correcting these levels, the problem should disappear.
Even at the recommended levels, chlorine can cause eye irritations. To enable effective sanitation at lower chlorine levels, consider installing a mineral pool sanitiser (e.g. Pool Wizard) which requires only about 25% of the chlorine normally necessary.