What is the main cause of waterborne diseases?

The main cause of waterborne diseases is sewage. This is because sewage often contains a mixture of pathogens, including bacteria, viruses, and parasites, which can contaminate water supplies. When humans consume or come into contact with this contaminated water, they are at risk of developing various gastrointestinal and other infectious diseases.

Sewage can enter waterways through improper disposal methods, leaks in sewage systems, and during flooding. The presence of pathogens from sewage in water sources poses a significant public health threat, leading to outbreaks of diseases such as cholera, dysentery, and hepatitis A. Effective sanitation and wastewater treatment are crucial in preventing these diseases, highlighting the importance of managing sewage properly to protect public health.