[mdjlucan]

Water buttI’ve noticed last night that it was leaking from the base is there any material that I can fix this with it’s a very small split where the rains filled up it seeping

[snow white]

I use a silicone sealer like the ones you use for bathrooms.  Lasts about a year when you have to reapply.

[JayG]

Assuming it's made from some sort of plastic, it's quite difficult (and/or expensive) to find the right glue to apply a patch.

I managed to fix mine (at the 3rd attempt) using a miniature soldering iron to weld the split back together, using a bit of extra plastic cut from the edge of the lid to help reinforce the weld.

(If your butts are like mine and have split where the 'claws' of the stand has indented the plastic over time, now is the time to saw off the offending projections to avoid a repeat.)