A microorganism or microbe is a microscopic organism. Bacteria, Cyst, and Virus’ are all considered microorganism. There are a vast number of microorganisms that can thrive in water. Some of these, such as E-coli, can be deadly to humans when ingested.
Microorganism can find their way into water supplies in a numerous amount of ways. Water supplies may be contaminated by sewage or animal waste leading to a type of bacterial called Fecal coliform, which is found in the intestines and feces of people and animals, to become present in water. Other contaminated materials can be washed into storm drains, streams, reservoirs, and other bodies of water, and then may travel into the water system.
Why is it bad?
Biologically contaminated water can be extremely harmful. Many bacteria can cause gastrointestinal discomfort, and flu like symptoms to even the healthiest person. A person with a weakened immune system may experience far worse symptoms such as dehydration and even death. Many serious diseases such as, hepatitis, typhoid, dysentery, and cholera can spread through contaminated water.
Microorganisms cannot be seen in water with the naked human eye, so you may realize your water is contaminated after you consume it. Gastrointestinal illness with flu-like symptoms, is a common sign that you may have consumed contaminated water. Many algae or bacteria in the water supply can cause water to taste or smell fishy, musty, and earthy.