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water pollution click to hear : water pollution

The cycle of the Earth’s waters is continuous, carrying and spreading pollutants introduced by human activity all around the planet.
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intensive farming animal dung oil spill pesticide septic tank water table household waste waste water oil pollution nuclear waste industrial waste

intensive farming click to hear : intensive farming

To achieve maximum production, intensive farming uses chemical fertilizers responsible for various forms of air and water pollution.

animal dung click to hear : animal dung

Animal dung introduces large quantities of nitrate into the soil; the nitrate then filters into the water table.

oil spill click to hear : oil spill

Certain underground gas tanks leak, discharging hydrocarbons into the water table.

pesticide click to hear : pesticide

Pesticide residue is found in the water table and in watercourses; it makes water unfit for consumption.

septic tank click to hear : septic tank

Wastewater leakage from a dwelling’s underground tank contaminates the water table.

water table click to hear : water table

Vast expanse of underground water fed by rainwater filtering through the earth; it supplies springs and can be collected in wells.

household waste click to hear : household waste

Burying household waste without taking any particular precautionary measures leads to contamination of the water table.

waste water click to hear : waste water

Untreated, it contains organic matter (e.g., bacteria, viruses) and potentially pathogenic substances that cause infection and promote the growth of algae.

oil pollution click to hear : oil pollution

Pollution caused by leaks from refineries and offshore drilling platforms, by ships emptying their fuel tanks at sea and by oil spills.

nuclear waste click to hear : nuclear waste

Radioactive nuclear waste was once immersed at the bottom of the ocean; it has a life span of up to 1,000 years.

industrial waste click to hear : industrial waste

Industrial waste is highly variable; its principal components are lead, mercury, cadmium, hydrocarbons and acid deposits.