Water Hyacinths have been used for sewage treatment for quite some time [1]. [1]https://www.spacefoundation.org/space_technology_hal/sewage-treatment-with-wate

Water Hyacinths have been used for sewage treatment for quite some time [1]. [1]https://www.spacefoundation.org/space_technology_hal/sewage-treatment-with-water-hyacinths/ https://www.spacefoundation.org/space_technology_hal/sewage-...