water pollution

Question 1

water pollution

Answer 1

the contamination of water bodies or sources including rivers, lakes, oceans, aquifers and groundwater. It occurs when pollutants are directly or indirectly discharged into water without adequate treatment to remove harmful compounds

Question 2

water-borne infections/diseases

Answer 2

infections/diseases caused by pathogenic micro-organisms that are transmitted in contaminated fresh water. infection commonly results during bathing, washing, drinking, preparing food, consuming food

Question 3

non-point source pollution

Answer 3

pollution which is the result of precipitation run-off from a wide range of curves including fertilisers and pesticides from agriculture, and chemicals and toxins from urban settlements. these pollutants are difficult to regulate.

Question 4

remediation

Answer 4

the removal of pollution or contaminants from watercourses which have become polluted

Question 5

low-impact development

Answer 5

LID is a star water management approach that can help to reduce storm water run-off. This is done primarily through the use of vegetation and permeable surfaces to allow infiltration of water into the ground. Permeable streets and pavements, green roofs, rain gardens and more urban parks allow water to infiltrate into soils rather than flow directly into sewers.

Question 6

appropriate technology

Answer 6

technology that is suitable to the social and economic conditions of the geographic area in which it is to be applied, it is environmentally sound, and promotes self-sufficiency on the part of those using it.