Groundwater abstraction from handpumps varies but is considerable. Of note is the percentage of groundwater not used in homes which ranges between 12% and 80% depending on source.
There is a need to reclaim the value of groundwater that is not used in the home. One obvious use is for small scale permaculture for food security and health and well being.
Water point infrastructure focused on permaculture was implemented at all CJF boreholes providing economic and health benefits from lost groundwater value.
GROUNDWATER USE ACCOUNTING
Borehole Water Accounting found that 30% of Groundwater was not used
The investment in groundwater infrastructure for the MGDs has not provided detailed accounting of groundwater abstraction and use in rural Africa. One of the first detailed study of groundwater use and purchase value (including water that drains away) was undertaken by the CJF project. Use of this water resource will cut down on the prevelance of water bourne disease and increase the health and well being of the community.
Extrapolation of data from Kokoma Model Village to Chikhwawa District
The economic value of groundwater extracted per year is about $250,000 USD. Importantly the economic value of groundwater wasted is about 1/3 this value or $85,000 USD per year. The use of this water for productive activities such as Permaculture increases the wealth and well being of the community and reduces the impact of water bourne disease due to standing water sources.
Wasted groundwater results in increased mosquito breeding and water bourne diseases. Permaculture use of this water resources provides for food security and income generation.
All of the communities who engaged with CJF IWRM activities developed their own permaculture gardens that used excess borehole water and local resources to grow food for enhanced climate change resilience.