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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.
A 2007 study found that over 137 million people in more than 70 countries are probably affected by arsenic poisoning of drinking water. The problem became a serious health concern after mass poisoning of water in Bangladesh. [1] Arsenic contamination of ground water is found in many countries throughout the world, including the US. [2]
Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and manufacturing industries—although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]
These products can travel through soil and seep into the groundwater; this process can occur through landfills, septic tanks, mining sites, fertilization, etc. [1] Groundwater contamination might not be detected for a long period of time and health problems can occur from drinking contaminated water.
Contaminated groundwater in the Central Valley of California is a growing problem due to contamination and overuse. [1] This problem is compounded by the overdrafting of underground aquifers. [1] nitrates are the most abundant pollutants in the Central Valley due to the copious amounts of agricultural runoff from the farms. [2]
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 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 ...
The Pohatcong Valley Groundwater Contamination superfund site is located in Warren County, Franklin Township, Washington Township, and Washington Borough in New Jersey. It was recognized in the 1970s but not designated into the National Priorities List until 1989. It is a contamination of the Kittany Limestone Aquifer underlying the Pohatcong ...
The longest free-flowing (undammed) river in the Eastern United States. [143] Named the 5th most polluted river in the United States by eco-activism groups, primarily in the Philadelphia/Chester region. [144] [145] 7–10 million pounds of toxic chemicals in the waterways mainly due to dumping by DuPont Chambers Works. [144] [145]