Explain the factors that affect the supply of water

answer:

1. pollution of water supplies

2. over abstraction

3. water infrastructure and poverty

explanation:

human factors affecting water supply:

pollution of water supplies - freshwater sources around the world are threatened by water pollution. water resources are under threat through wastage and our thoughtless dirtying of it.

over abstraction – when too much water is taken out of an aquifer it can limit future water supplies and have drastic consequences.   as mexico city’s population exploded during the past century, the ability to supply water became insufficient to meet demand.   this resulted in too much groundwater extraction which has contributed to the continued subsidence of mexico city, which sits below the current level of lake texcoco and increases the chance of catastrophic flooding. in the mid-20th century, mexico city’s ground subsided a reported 40 cm/year in some areas due to the increasing extraction of groundwater. this subsidence can cause pipes to break and sink holes to appear. over abstraction can also allow salt water to intrude inland, polluting the ground water.

water infrastructure and poverty– this is the pipework, cleaning facilities, waste treatment plants, pumps and storage facilities needed to guarantee water supplies within a country or place.   many hics can afford such infrastructure, but people in many poorer countries this isn’t possible.  

answer:

1. pollution of water supplies

2. over abstraction

3. water infrastructure and poverty

explanation:

human factors affecting water supply:

pollution of water supplies - freshwater sources around the world are threatened by water pollution. water resources are under threat through wastage and our thoughtless dirtying of it.

over abstraction – when too much water is taken out of an aquifer it can limit future water supplies and have drastic consequences.   as mexico city’s population exploded during the past century, the ability to supply water became insufficient to meet demand.   this resulted in too much groundwater extraction which has contributed to the continued subsidence of mexico city, which sits below the current level of lake texcoco and increases the chance of catastrophic flooding. in the mid-20th century, mexico city’s ground subsided a reported 40 cm/year in some areas due to the increasing extraction of groundwater. this subsidence can cause pipes to break and sink holes to appear. over abstraction can also allow salt water to intrude inland, polluting the ground water.

water infrastructure and poverty– this is the pipework, cleaning facilities, waste treatment plants, pumps and storage facilities needed to guarantee water supplies within a country or place.   many hics can afford such infrastructure, but people in many poorer countries this isn’t possible.