ZwitterCo is a Massachusetts-based company founded in 2018 that specializes in membrane solutions for the treatment of highly-impaired wastewater. Their nanofiltration technology stops organic molecules, reducing fouling of membranes in industrial water treatment applications and enabling efficient water recycling. ZwitterCo's membrane technologies are chlorine-tolerant, back-washable, and resistant to irreversible fouling, making the treatment and reuse of wastewater economically viable for industrial operators and integration companies.