Combine all ingredients in the jug of a blender and process until smooth.
Line a tall jug with a nut milk bag or muslin cloth. Scoop the blended mixture into the nut milk bag/muslin cloth and allow to rest for approximately 2 hours.
Take care to not press the tomato mixture through the muslin cloth as you don't want any solids escaping into the clear liquid. The tomato water will slowly and steadily drain into the jug below. You will get about 2-3 tall glasses worth of tomato water with this recipe.
Store in a glass bottle in the fridge. Jazz it up with a squeeze of lemon juice and few sprigs of mint. Sip chilled, throughout the day.