Cryptosporidium, a microscopic parasite that can be found in water sources such as rivers, lakes and groundwater. It’s known as a common cause of waterborne diseases and can cause gastrointestinal illness when ingested. Cryptosporidium is resistant to many traditional water disinfectants methods, including chlorine, and can survive for long periods in water. The main transmission for cryptosporidium is through the ingestion of contaminated water and foods, whilst also known to spread through direct contact with infected individuals or animals. The particular risks to individuals it can pose are to those with weakened immune systems, for those with HIV/AIDS or undergoing chemotherapy, as they’re susceptible to severe illness. Prevention of the transmission of cryptosporidium and other waterborne illnesses, it is important to treat water from potentially contaminated sources before consumption, with methods such as filtration systems with small pore sizes, submicron filters or membrane technologies. These methods can effectively remove cryptosporidium from water. Additionally, boiling water or using appropriate water disinfection methods, recommended by health authorities is essential to maintain good hygiene for the human body and food resources when dealing with cryptosporidium and other harmful pathogens.