Natalie: Mr. Monk, you have to take a sip. You're dehydrated.
Adrian Monk: I'm not that thirsty. I'm not drinkin' that. You have no idea what's in there.
Captain Stottlemeyer: Monk, don't you know what this is? This is Sierra Springs! This is the water you drink all the time.
Natalie: Yeah, he's right. And I saw it on the map. Which means the bottling plant is right over that hill.
Adrian Monk: Sierra Springs?
Captain Stottlemeyer: The one and only.
Natalie: This is where they get it. This is the exact same water, only it's free!