Evacuation Hydration

I've been at my job for two years (next week). Nearly every time I use the stall—and, of course, I use the stall for the differently-abled (so much room, and handles!)—there is an empty and cap-less water bottle sitting nearby. A new one appears daily.

I've asked around, and no one seems to know who procures the bathroom-bottle. For such a small company (50 people), I'm surprised the case hasn't been cracked.

From the clues I've collected, the male (I hope), comes in during the late morning. They must work up quite a sweat, because the bottle of water is completely empty, and the cap appears to have been removed in haste. Haste I say!

It is usually Kirkland Signature brand water, which is from Costco. You need a membership for that, so I could do an informal survey around work, and the bottle-bandit may unwittingly reveal himself. Lately, however, Arrowhead brand has been popping up, and I think the only people with regular (heh) access to that manufacturer's H₂O is executive staff.

What I'm trying to say is that the vice president may or may not be "doncing" at such an intense rate, and is taking in over 12 ounces of water per sitting. Egads!