[giantg2]

There aren't any official universal tests that I know of. Different trainers might give a certificate, but most of it is very informal in the US. The standards are extremely low.

Organizations like BSA have different courses and tend to certify their members by different levels for what privileges they have in the water. The Red Cross and YMCA have the most recognized certifications, mostly for their lifeguard courses.

If you want a good idea of how much of a joke the standards are in the US, the basic test to be in the Navy is only a deep water jump, 50 yard swim, and 5 minutes prone float. Most other branches don't even have a swim test requirement.