Home Health Best practices for environmental health : environmental pollution, protection, quality and sustainability
SUB-PROBLEMS INCLUDING LEADING TO IMPAIRMENT AND BEST PRACTICES FOR NON-HAZARDOUS WASTE DISPOSAL AND HAZARDOUS WASTE DISPOSAL USING UNDERGROUND INJECTION WELLS
(See endnotes 61, 64)
An underground injection well is a dug or mechanically constructed hole in the ground that is deeper than it is wide and is used for depositing fluid including hazardous wastes and also carbon dioxide into isolated areas typically far below the Earth’s surface. This means of disposal started in the 1930s and was used to remove salt water which was present during the drilling for crude oil. This process became even more common in the 1950s when chemical companies began depositing industrial waste into deep wells. In 2010, the EPA finished issuing regulations for geological sequestration of carbon dioxide.
There are at least six ways in which fluids injected underground in wells can migrate into the underground source of drinking water. They are:
Over half of the liquid hazardous waste and a large amount of the non-hazardous industrial liquid waste in the United States are put into underground injection wells. There are six types of underground injection wells that are regulated to protect the groundwater supply. They are:
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