Preheat oven to 180 C. Line a baking tin with baking parchment.
In a medium bowl, beat the sugar and butter until smooth and creamy. Beat in the eggs, water and bananas with the sugar mixture until well blended.
Mix in the flour, bicarbonate of soda, salt and baking powder just until the mixture is moistened. Be sure to scrape the sides of the bowl to blend all ingredients.
Bake for about 60 minutes. Bread is done when the top is firm to the touch and a golden brown colour. Time will vary according to loaf size and oven type. When bread is removed from oven, allow it to cool on it's side for 10 minutes, then remove from tin and let cool on a wire rack.