Does pool water make your mouth dry?

Based on research I have done, the short answer is "possibly." High chlorine content can cause throat irritation, thus causing dry throat/mouth sensation. It could signal an allergy as well, so being in tune to your body's reactions and avoiding those triggers is the best method of treatment. If you are a swimmer and can not avoid the pool, then try managing by keeping water on deck to sip on occasionally and ensuring that dehydration is avoided during exercise (people often don't realize they are sweating while exercising in water).