A photo would help. Young EWDs are readily identified – large round head and eyes, very long tail, back and tail with a series of dark coss-bands interspersed with yellow dotted lines around the entire length of the body and tail.
As mentined, pools set up for swimming won’t have chlorine or salt in hazardous concentrations. However, as indicated, the lizards cannot climb the sides of the pool and if left long enough, will tired and drown. The easy solution is one or two of those flexible foam ‘pool noodles’ one to two metres long. Hang one end in the pool with the other end on the pool edge held in place with a brick. That way they can climb out. Even a sytrofoam kickboard or lid from a broccoli box or appropriate piece of packaging will give it something to climb upon.
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