Greywater reuse can save water, but people need to accept it for it to work. A study in Santiago, Chile found that people prefer using treated greywater for things like flushing toilets and watering gardens, but not for drinking. As the quality of greywater gets worse, people may need money to use it. Factors like gender, age, education, and knowledge about greywater affect how willing people are to use it. This research helps us understand what could make more people use greywater in cities and save water.