FACTORS AFFECTING THE SUPPLY
OF WATER
• Climate: most fresh water supplies come from lakes and rivers. The supp
to these depends on how much rainfall a region experiences. As climate
change worsens, some regions will become drier.
• Rock type: water cannot pass through impermeable rock, and so it flows
directly into rivers and lakes. Permeable rock allows water to seep into th
ground and it will be stored in aquifers. This water is harder to extract.
• Pollution: reduces the amount of fresh water available. Waste from
homes, factories and farms contaminates water. Pollution can be visible
such as plastics in water.
OF WATER
• Climate: most fresh water supplies come from lakes and rivers. The supp
to these depends on how much rainfall a region experiences. As climate
change worsens, some regions will become drier.
• Rock type: water cannot pass through impermeable rock, and so it flows
directly into rivers and lakes. Permeable rock allows water to seep into th
ground and it will be stored in aquifers. This water is harder to extract.
• Pollution: reduces the amount of fresh water available. Waste from
homes, factories and farms contaminates water. Pollution can be visible
such as plastics in water.
