The Phi Phi Wastewater Management Ecological Park by Arsomsilp Community and Environmental Architect

Once an ecological paradise, Koh Phi Phi now faces environmental degradation from wastewater pollution. The Krabi Wastewater Management Authority has expanded its operations with underground tanks. The project transforms a 7.072-square-meter site into an ecological park that integrates wastewater treatment, biodiversity, and community spaces.

Treated water flows into a phytoremediation pond, which cleanses it before it is discharged. The pond also serves as a stormwater basin and irrigation reservoir. Native plants boost biodiversity and reduce maintenance. Hardscapes are limited to circulation areas. The design, which caters to all ages, was shaped by community participation and includes walking trails, a sports court, bouldering walls, and an outdoor gym. A living classroom raises awareness of water purification and biodiversity through a water-spinning bike, signage, and access to the purification process. The water tank is clad in recycled bottle-cap fish tiles and is called the “Swimming Fish Tower”. This project is a replicable model of how infrastructure can restore ecology, educate, and connect communities.