Skininfection On Ear What Infection Can You Get From Public Swimming Pools Like YMCA?

What infection can you get from public swimming pools like YMCA? - skininfection on ear

i Wonna know if it something to be feared, while Learning to swim in the pool at the YMCA. Whether a public swimming pool and many people go there and the elderly. I have no choice, so please tell me what I'm cautious, such as sexually transmitted diseases, yeast, bacteria and skininfection ....
Thanks