if you mean swimming in the lakes - no.
WDW did away with swimming in the lakes a few years ago.
they say it was the bacteria in the lakes - but others have report the increase in alligators at WDW.
now there are several beaches - Polyn, GF, WL/VWL, FW, BC/YC, CBR - OKW has a play area with sand at the main pool and a new slide!