Possible Clues:

• First man to market water
• Water, colloquially
• Fix me a salad then a simple drink
• Where you might have bought your mother a non-alcoholic drink
• Head of aquarium to check market for water
• Relaxed, tolerant
• A reservoir selling water
• A woman swallowing salt water
• Only water needed to be selling mothers there, perhaps
• Water, in other words