Expanding rainwater catchment systems

Description

Expanding rainwater catchment systems involves increasing the collection, storage, and use of rainwater to supplement water supplies, particularly in areas facing water scarcity or unreliable infrastructure. This strategy addresses water shortages, reduces dependence on external sources, and mitigates flooding and erosion. Practical actions include installing rooftop catchment systems, constructing storage tanks, and developing community-scale harvesting infrastructure, thereby enhancing water security, supporting agriculture, and promoting sustainable resource management in vulnerable regions.

Implementation

This strategy features in the framework of Agenda 21 as formulated at UNCED (Rio de Janeiro, 1992), now coordinated by the United Nations Commission on Sustainable Development and implemented through national and local authorities. Agenda 21 recommends the expansion of urban and rural water-supply and the development and expansion of rainwater catchment systems, particularly on small islands, in addition to the reticulated water-supply system.