Which microorganism is commonly associated with waterborne diseases?

Waterborne diseases can be caused by a variety of microorganisms, including bacteria, viruses, and protozoa. Each of these groups has specific pathogens that can contaminate water sources, leading to illnesses in humans.

Bacteria, such as E. coli and cholera-causing Vibrio cholerae, are notorious for causing severe gastrointestinal illnesses when ingested through contaminated water.

Viruses, like norovirus and hepatitis A, can also be transmitted via water that is not properly treated, leading to outbreaks in communities or among individuals consuming tainted water.

Protozoa, including Giardia lamblia and Cryptosporidium, pose a risk as well. These parasites can survive in harsh water conditions and are resistant to some disinfection methods, making them a significant concern for water safety.

Thus, since all three types of microorganisms can be responsible for waterborne diseases, the inclusion of all of them in the answer underscores the diverse range of pathogens that pose public health risks through contaminated water sources.