Water is the elixir of life. It is needed to sustain all life forms. Life without water is impossible. Water constitutes 70% of the earth"??s surface. However, all the water on the planet is not suitable for consumption. The sources of drinking water are rivers, canals, shallow groundwaters, upland lakes, deep ground water, fog and rain water harvesting. Water in its original state contains various contaminants and pollutants that make it unsuitable for drinking. The invention of the water purifier has made it possible to purify water and make it safe for consumption. Water purifiers are a boon to civilization.

Water Purification

Water purification is the process where contaminants and pollutants are removed from water to make it safe for drinking.

There are three stages of water purification:

1. Primary Treatment: Pumping water from Rivers and storing it after initial screening.

2. Secondary Treatment: This stage consists of separating solid contaminants with the help of coagulation, filters, membranes and flocculation.

3. Tertiary Treatment: This stage involves disinfecting water, ph adjustment, and carbon treatment.

Water Purifier

An ordinary water purifier is a large unit that stands besides the sink and is attached to the tap by a hose. A water purifier comes in various models. Different water purifiers remove different contaminants. You should choose a water purifier that is specific to your needs. Water purifiers also soften hard water. There cost can vary depending on the size. A small pitcher water purifier can cost between $20 to $30, while the larger house water purifiers can cost you around a thousand dollars. Cost of installation and maintenance would be extra.

Water Purification Techniques

The other water purification techniques are as follows:

·Reverse Osmosis: Method used in large-scale water purification where a semi permeable membrane for filtration"??s pressure is used to pump impure water through it.

·Carbon Filtering: Charcoal is a good adsorbent and is used to adsorb toxic contaminants.

·Ion Exchange: The water is deionized.Unwanted ions are removed from water.

·Plumbo Solvency Reduction: This method of water purification is used in areas with high acidic content in water that dissolves lead pipes.

Investing in a water purifier can save you from spending thousands of dollars later on doctor"??s bills, as water purifiers guarantee healthy, safe drinking water for the entire family.