Aqua
It’s a sad state of affairs I live in.
I use a timer on my computer to remind me to drink water ever 30 minutes.
Like most people I get into a groove and forget trivial things. Food, water… I’ve even held my bladder for as long as possible because I wanted to get my current thoughts out of my head.
If you don’t have a timer and are on a mac, I highly recommend Flextime.
It costs a bit, but it’s kept me from dry-baking a few boiling pots.