Ahem ... I think I hear "lake water" there - simple as that.

Yeah, to keep it easy and logic I also would use lake water.
But I distinctly hear plake (or whatever) water.

Well then, go figure ...

It's 'lake'. In both cases the 'l' of lake slightly 'clashes' with the 't' from the word before, making it sound rather like a plosive (a 'p' is also a plosive). In the first example two voices are involved. In the second example he just stumbles on the word slightly.

Thanks a lot!!!