1. The property of resembling the viscosity of water
   "The wateriness of the soup disappointed those expecting a heartier meal"
    
2. The wetness of ground that is covered or soaked with water
   "the baseball game was cancelled because of the wateriness of the outfield";
   - muddiness, sloppiness
    
3. Meagerness or poorness connoted by a superfluity of water (in a literary style as well as in a food)
   "no one enjoys the burning of his soup or the wateriness of his potatoes"; "the haziness and wateriness of his disquisitions"; "the wateriness of his blood"

Type of: exiguity, leanness, meagerness [N. Amer], meagreness [Brit, Cdn], poorness, scantiness, scantness, skimpiness, thinness, wetness