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Groundwater pollution (also called groundwater contamination) occurs when pollutants are released to the ground and make their way into groundwater.This type of water pollution can also occur naturally due to the presence of a minor and unwanted constituent, contaminant, or impurity in the groundwater, in which case it is more likely referred to as contamination rather than pollution.
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 February 2025. Water located beneath the ground surface An illustration showing groundwater in aquifers (in blue) (1, 5 and 6) below the water table (4), and three different wells (7, 8 and 9) dug to reach it. Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in ...
Tube-wells were supposed to draw water from underground aquifers to provide a safe source of water for the nation. Millions of wells were constructed as a result. In 1993, it was discovered that groundwater in large parts of Bangladesh was naturally contaminated with arsenic. [11] [12]: 389 The issue came to international attention in 1995. [13 ...
An aquifer is an underground layer of water-bearing material, consisting of permeable or fractured rock, or of unconsolidated materials (gravel, sand, or silt). Aquifers vary greatly in their characteristics. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.
Groundwater remediation is the process that is used to treat polluted groundwater by removing the pollutants or converting them into harmless products. Groundwater is water present below the ground surface that saturates the pore space in the subsurface.
Flows through the unsaturated zone that couple surface water to soil moisture and groundwater can be upward or downward, depending upon the gradient of hydraulic head in the soil, can be modeled using the numerical solution of Richards' equation [2] partial differential equation, or the ordinary differential equation Finite Water-Content method ...
This shallow recharged water is then recovered as potable water and injected into the deep basalt aquifer. [citation needed] During the injection process, electrical energy can be generated by the head pressure of the water flowing back into the aquifer. This stored water is recovered during late summer and early autumn for irrigation needs.
The Mahomet Aquifer supplies approximately 850,000 people with water. The Illinois Bureau of the Budget projects that the population could increase to about 910,000 people by 2020. [ citation needed ] An estimated 100,000,000 US gallons (380,000 kL) per day of groundwater is pumped from the aquifer to supply municipal, agricultural, commercial ...