Use two different letters for drinking dirty water and putting dirty water in a bottle.

I thought I was taking crazy pills when I tried to get water out of the condenser and realized the keys you needed to press for either putting the dirty water in a bottle or simply drinking it were both "E". Are the devs really so hard-up for spare letters that they expect us to find out the hard way that there's a difference between tapping "E" and pressing it? And I only found that out by visiting the forums. BTW, I have no idea whether tapping or pressing is the choice I want.