Which item would be categorized as an industrial pollutant when assessing water quality?

Which item would be categorized as an industrial pollutant when assessing water quality?

• A. Bacteria
• B. Dissolved minerals
• C. Fertilisers
• D. Industrial pollutants

Answer: (D)

The main idea here is that pollutants are grouped by where they come from. Industrial pollutants come from factories and industrial processes, introducing chemicals, oils, solvents, or heavy metals into water. So naming the source as industrial fits exactly with that category, making it the best choice. Bacteria are biological contaminants that usually come from sewage or organic waste, not industry. Dissolved minerals are simply inorganic substances that can enter water from natural sources or human activity but aren’t specifically linked to industry. Fertilisers are agricultural pollutants, associated with farming, not industrial production.

The main idea here is that pollutants are grouped by where they come from. Industrial pollutants come from factories and industrial processes, introducing chemicals, oils, solvents, or heavy metals into water. So naming the source as industrial fits exactly with that category, making it the best choice.

Bacteria are biological contaminants that usually come from sewage or organic waste, not industry. Dissolved minerals are simply inorganic substances that can enter water from natural sources or human activity but aren’t specifically linked to industry. Fertilisers are agricultural pollutants, associated with farming, not industrial production.