If you (as a friend and neighbour) don't have "Free access", then the chances of us checking is going to be limited to say the least ??
"It is possible I guess there is a lid that's below the edges of the box and the water was on top of that".
Anybody that owns a premises, let alone a million-plus jointing points, will appreciate that halting the ingress of water is nigh-on impossible, especially in underground enclosures. If it's above ground, then none of the closures are waterproof, as the water will drain by the laws of gravity, for that reason there is no "Edge of boxes".
They do have a certain level of 'splash' protection afforded to them (Equivalent, I would imagine, to the electrical regs IP index), but nothing else is required due to the afore-mentioned laws of gravity.