viruses

Contaminants Regulated by the U.S. Environmental Protection Agency and their Health Effects

Contaminants Regulated by the U.S. Environmental Protection Agency and their Health Effects

A water contaminant is a substance which is found in water that has the potential to pose a risk to public health at certain levels. Some contaminants occur naturally in the environment and seep into water sources through erosion. Unfortunately, many of the contaminants found in water are a result of human activities. The industrial wastes from factories, refineries, mines and mills all contain harmful substances which can contaminate water sources.

Disease Causing Micro-organisms

Disease Causing Micro-organisms

How many times have we been told to wash our hands before sitting down at the supper table or after touching money and other dirty surfaces? By washing up we think that we’re clean and microorganism-free. We have baths, cook our food, treat our sewage and even cover our mouths when we cough and sneeze to prevent the spread of those tiny dirty particles that could make us sick.

Pathogenic Microbes

Pathogenic Microbes

Some people believe that all that is required to produce safe water is to have a chlorine residual in the water. This, unfortunately, is not correct. The presence of particles will, in fact, shield pathogenic microbes from being killed by chlorine or other disinfectants. It is, therefore, important to remember that only good quality water can be safely disinfected.

Viruses

Viruses

It is hard to believe that a virus particle 100 times smaller than a single bacteria cell (which is more than 10 times smaller than a human cell that is ten times smaller than the diameter of a single human hair) can make you feel so miserable.