The fourth paragraph states that 5.3 % of the water use in households is “other”. What could

be included in this category that is not already in another category?

Some examples of items that could be included in the "other" category could be water used for washing pets, filling up decorative fountains or pools, cleaning outdoor furniture, or watering indoor plants. These activities may not fit neatly into the existing categories such as bathing, laundry, or dishes.

make the answer 1 sentence

Activities such as washing pets, filling decorative fountains or pools, cleaning outdoor furniture, and watering indoor plants could potentially be included in the "other" category of water use in households.