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thermal energy

Geothermal Energy

Jessica Stewart's picture

Groundwater stored in the earth’s crust underpins all our lives – the ultimate source of freshwater for billions has become victim of over-extraction and the ultimate sink for pollutants.
 
For too long, not enough has been done to regulate the use of this precious, on-demand resource and manage disposal of waste. If rates of groundwater depletion have tripled in the past 3 decades, then the rate at which pollutants have accumulated in shallow aquifers can only have equaled or exceeded that rate.
 
The lack of care given to groundwater is placing a huge tax on the poor who have no access to clean piped water supply and depend on groundwater for their health and livelihoods. Self-supply, through the use of wells, from polluted aquifers in urban and rural areas is widespread, but un-reported. The impacts are all too apparent in the densely populated urban slums and rural communities that often live just centimeters above polluted soil and rock. Out-migration of poor farmers who are no longer able to access deepening groundwater tables has been a feature in arid and semi-arid regions, but intensive agriculture is also leaving behind a legacy of nitrates and pesticides which imprint aquifers for decades.