Possible Clues:

• A wet part transformed into readily available liquid
• Faucet refreshment
• Economical restaurant order
• Cold running drink?
• It flows from a faucet
• We part at revolting Adam's Ale
• One of those working in a public house gets drink that's tasteless and ends up down the drain
• Drink milk before restaurant employee? One's thrown out
• Source for free drinks
• Not wet, apart from what's maybe filtered out of the kitchen