The Cycloclean, developed by Nippon Basic Co., Ltd., is a bicycle-mounted water purification system designed for emergency use and areas lacking clean water access. By pedaling, users can produce up to 6 liters of drinking water per minute from sources like rivers, ponds, and swimming pools. The system employs a four-stage filtration process, including a pre-filter and three additional filters, to remove suspended solids, bacteria, and odors. It is not suitable for seawater.