water purify

water purify

The standards for drinking are typically set by governments or by international standards. These standards will typically set minimum and maximum concentrations of contaminants for the use that is to be made of the water.

It is not possible to tell whether water is of an appropriate quality by visual examination. Simple procedures such as or the use of a household filter are not sufficient for treating all the possible contaminants that may be present in water from an unknown source. Even natural – considered safe for all practical purposes in the 1800s – must now be tested before determining what kind of treatment, if any, is needed. Chemical analysis, while expensive, is the only way to obtain the information necessary for deciding on the appropriate method of purification.

Water purification is a process of removing undesirable chemicals, materials, and biological contaminants from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacology, chemical and industrial applications. In general the methods used include physical processes such as and biological processes such as or chemical processes such as and and the use of electromagnetic radiation such as

The purification process of water may reduce the concentration of particulate matter including; and a range of dissolved and particulate material derived from the surfaces that water may have made contact with after falling as .