Today's Otago Daily Times cartoon has a pair of farmers alongside a stream - and saying "Its perfectly clear it is not the cows polluting the stream - its all those dead fish".
Not the answer you expected, but is indicative of one source of pollution.
Aircraft
Aircraft
A common pollutant that originates from groundwater dissolution in granitic terrains is arsenic. In these geological formations, natural processes can mobilize arsenic from minerals, leading to its concentration in groundwater. This can pose significant health risks when contaminated water is used for drinking or irrigation, affecting both human health and ecosystems. Monitoring and remediation efforts are essential to manage arsenic levels in affected areas.
Carbon monoxide is a major pollutant in urban areas.
Desalination plants are not a major source of groundwater pollution. Groundwater pollution is typically caused by activities such as industrial discharges, agriculture runoff, and leaks from underground storage tanks.
The major air pollutants found in coal are carbon dioxide and methane.
groundwater is water found below the ground. In many countries such as the UK, Nambia and Bangladesh, groundwater is a major water source for the population. Contamination of groundwater then, is the pollution of this water which often has major ramifications for a population. Major contaminants are nitrogenous fertilizers, and heavy metals found in the soil or rocks. Chalk and even certain types of plants have been used to combat groundwater contamination. Water hyacinth, for example, a plant found in Bangladesh was used to decrease the amounts of arsenic found in the groundwater in that country.
Particulates
Particulates
The three major uses for groundwater are drinking water supply, irrigation for agriculture, and industrial processes. Groundwater is a vital resource that serves as a primary source of water for many communities and plays a crucial role in sustaining various economic activities.
Major air pollution disasters have all occurred in industrialized areas.
The major reservoirs of Earth's freshwater include glaciers and ice caps, groundwater, lakes, rivers, and wetlands. These sources contain the majority of the world's accessible freshwater, with groundwater being the largest reservoir.