Answer :
One of the main contaminants of groundwater is agricultural chemicals.
Chemical contamination of groundwater: what is it?
The definition of groundwater contamination is the addition of undesired elements to groundwater as a result of human activity (Government of Canada 2017). Chemicals, salt on the roads, bacteria, viruses, drugs, fertilizers, and fuel are some of the things that might cause this.
Surface water and groundwater quality can be harmed by agricultural pollutants. Pesticides and fertilizers do not stay in place on the landscape after application; instead, runoff and infiltration carry these pollutants into nearby rivers, streams, and wells.
What role does agriculture play in the depletion of groundwater?
Despite the fact that recharge is frequently increased in irrigated areas, only recharge from irrigation fed by surface water represents a net increase in recharge, while changes in groundwater-fed irrigation simply reflect groundwater recycling with net groundwater depletion.
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