Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Americans love to swim. We’ve won one-third of all Olympic medals ...

It was supposed to be a community swimming pool, but many people stayed away because they couldn’t tolerate the biting, nose-curdling odor of chlorine. Others experienced breathing and skin problems.

Despite popular belief, saltwater pools aren't chlorine-free. “That’s been the No. 1 ask for a number of years now," said Alison Felschow, vice president of Crystal Pools in Columbia. In the last 10 ...