Final answer:
Water from rivers and groundwater is often unfit to drink due to water pollution, inadequate sewage disposal, and natural runoff carrying pollutants.
Step-by-step explanation:
Water from rivers and groundwater is often unfit to drink due to various factors.
- Water pollution is a major concern, as contaminants such as pathogens, industrial waste, and agricultural runoff can enter rivers and groundwater.
- Lack of proper disposal of sewage in urban areas and inadequate maintenance of water supply infrastructure can also contribute to water pollution.
- Moreover, natural runoff and floods can carry pollutants from the land or urban areas into the water sources.
All these factors can make the water unsafe for drinking, posing risks to human health.