Which of the following has resulted in deterioration in water quality?

Correct option is A

The correct answer is (A) Not disposing of waste water properly

Explanation:

• The direct cause of water quality deterioration is the discharge of pollutants into water bodies. When industrial, domestic, and agricultural wastewater is not treated or disposed of properly, it introduces harmful chemicals, pathogens, and heavy metals into the water supply.

• This process leads to water pollution, making the water unsafe for human consumption, irrigation, and the survival of aquatic life.

• For example, the release of untreated sewage leads to the growth of harmful bacteria and the process of eutrophication (excessive nutrient enrichment), which depletes oxygen levels in the water.

Information Booster:

• Point source pollution refers to contaminants that enter a water body from a single, identifiable source, such as a pipe or a ditch from a factory.

• Improper disposal of plastic and solid waste also contributes to water quality issues by leaching toxic chemicals into groundwater.

Additional Knowledge:Deforestation (Option B)

• While deforestation leads to soil erosion and affects the water cycle, its primary impact is on water quantity and the siltation of riverbeds rather than the chemical deterioration of water quality itself (though it can indirectly increase turbidity).

Wrong distribution of water resources (Option C)

• This refers to the scarcity or mismanagement of water supply. It affects the availability of water to different regions but does not inherently change the quality of the water being distributed.

Excess population (Option D)

• This is a root cause that increases the demand for water and leads to more waste generation. However, it is the management of that waste (Option A) that directly determines whether the water quality deteriorates. High population with excellent waste management would not necessarily result in poor water quality.