Sources of Water Pollution

Water pollution happens when harmful substances such as chemicals, garbage, or bacteria enter rivers, lakes, and oceans, making the water unsafe for drinking and harming ecosystems.

The primary sources of water pollution are categorized into two types: point-source pollution and nonpoint-source pollution.

Point-source pollution happens when pollutants come from a single source, such as a factory dumping waste into a river or sewage leaking into bodies of water.

On the other hand, nonpoint source pollution occurs when pollutants come from multiple sources rather than a single location—for example, runoff carries waste and chemicals like fertilizers and pesticides from farms into rivers and lakes.

Pollutants from farms, landfills, and factories, such as chemicals, can also seep into the soil and pollute underground water sources.

Another major problem is trash and plastic pollution. Plastic bottles, bags, and other waste can travel long distances in water, harming marine animals that mistake them for food.

Besides pollution caused by humans, natural events like floods and hurricanes can also spread waste, chemicals, and sewage into clean water sources.