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Decentralized wastewater treatment provides efficient & effective treatment for domestic wastewater flows from 1  – 1.000 cbm in urban settings where funds for sophisticated wastewater treatment systems are not available and / or skilled operators are not available. Community-based sanition services include health & hygiene education and training for operation & maintenance and are combined with the technical approach. The projects where initiated by residents of poor communities, local NGOs, municipalities, national demonstration programs. National governments and international sector development and financing organisations steped in during up-scaling of programs. Cooperation agreements between NGOs, local governments and communities became formalized. Governments and municipalities facilitate training of local facilitators and tender out construction activities.

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