How Does Sewage Pollute Water?

Introduction

Sewage pollution occurs when untreated wastewater from homes and industries is released into water bodies. This can have serious effects on the environment.

Key Ways Sewage Pollutes Water

• Nutrient Overload: Sewage contains high levels of nitrogen and phosphorus. When these nutrients enter rivers or lakes, they can cause excessive algae growth, known as algal blooms. This depletes oxygen in the water, harming fish and other aquatic life.
• Pathogens: Sewage often carries harmful bacteria and viruses. When contaminated water is ingested or comes into contact with humans, it can lead to diseases such as cholera and gastroenteritis.
• Toxic Substances: Industrial sewage may contain heavy metals and chemicals that poison aquatic ecosystems, affecting plants and animals.

In summary, sewage pollution disrupts water quality, harms wildlife, and poses health risks to humans.