eli5 Is there a reason the waste water like from showers can’t be filtered through pipes and used for toilet water?

Question

eli5 Is there a reason the waste water like from showers can’t be filtered through pipes and used for toilet water?

In: 797

Answer 1

Water systems should definitely be re-designed for better efficiency. Why can’t shower water be reused for watering your plants? That would be a huge reduction in water use.