The natural environment of Palau’s Pacific islands is highly vulnerable to human activities and natural threats. Existing wastewater management methods have harmed freshwater quality and contributed to algal blooms, declining coral reefs, and decreasing marine populations. A reliable, eco-friendly wastewater management system is essential to protect Airai’s environment and public health.
Nature-based wastewater management system in Airai State, Palau, to protect coastal ecosystems and communities
Innovative wastewater management for sustainable environmental protection in Palau
Protecting Airai’s coastal ecosystems and marine life with a nature-based wastewater treatment solution.
Project Info
Location
BNC focus
Green-gray infrastructure solution
Funding duration
18 months (2023–2024)
Project Partner
More information
Ridge to Reefs is dedicated to restoring ecosystems and improving water quality through innovative solutions like their Bioreactor Gardens, which reduce nutrient pollution and support sustainable agriculture.
Podcast
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Nature-based wastewater treatment to protect Palau’s coastal ecosystems
Airai State, Palau, Ridge to Reefs, and Palau Community College Cooperative Research and Extension are collaborating to develop innovative, nature-based wastewater treatment facilities. These facilities aim to improve coastal environmental conditions, protect coral reefs, seagrass beds, and mangrove ecosystems, and reduce the ecological footprint of local communities. The project pilots will use bioreactor systems adapted from successful models in Hawaii. They will demonstrate significant reductions in nitrogen, phosphorus, and suspended solids, aligning with conservation goals.
How BNCFF supports nature-based wastewater management in Palau
Funding from the Blue Natural Capital Financing Facility (BNCFF) is vital for building a business case for improved wastewater treatment in Airai State. The support will enhance long-term financial viability and lay the groundwork for scaling the project nationally across Palau. The project also serves as a model for other small island developing states in the Pacific, proving the effectiveness and adaptability of this sustainable wastewater treatment approach.
Impacts created
Nature
Airai's pilot wastewater management system will reduce freshwater contamination and coastal pollution, improving marine and coastal environmental health. By incorporating locally sourced biomass into the treatment process, the project minimizes the human ecological footprint and supports long-term ecosystem resilience.
People
This initiative helps protect surface and groundwater quality, ensuring safer water sources for local communities and reducing public health risks tied to inadequate wastewater treatment. The nature-based system aligns with community well-being and environmental health goals.
Business
The project supports local employment, sets a model for sustainable development, and contributes to establishing national wastewater standards. The success of the bioreactor system in Airai will guide policy and regulatory frameworks for broader adoption across Palau, promoting sustainable infrastructure.
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Calls for Proposals
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