I am 27 years old and I know how to swim!! I know how to especially tread water and it isn’t like I am going to drown in the deep end and this one lifeguard blew the whistle at me and told me to get out of the pool and I wasn’t allowed in the deep end until I took the deep water test. Why was that? I forced to go in the shallow end and take a deep water test and tread water for 10 minutes. I thought that was pretty stupid. Like she thought I seriously didn’t know how to swim!