Water purification is the process of cleaning the impure water and making it fit for drinking. The impurities of the water may be dissolved salts, germs, TDS, etc. depending upon the water source. There are various purification processes to clean the water. The main thing required is a purifier. A water purifier is manufactured based on purification processes. It comes along with a storage container where the purified water is stored and a tap is attached to the container from where the users can fetch the water. There are large varieties of water purifiers available in market.
What kind of water supply is coming at your home?
The water supplied to our homes may differ in their sources. The purification techniques depend on the type of water to be purified. Hence, it is very important to know the type of the water supply your home gets. This will help you to choose the best suitable purifier. There are different sources for water like oceans, seas, rains, wells etc. Here are the main sources of water supply.
1) Ground water: Over time, some of the rain water seeps through the soils on to the non-porous rocks below and is stored there. It is also the water which flows within aquifers below the water table. Aquifers are the geological formations of soil, sand and rocks. The water moves slowly in aquifers. The groundwater supplies are replenished by rain and the snow melt from the mountains. People face groundwater scarcity if it is used rapidly before it can be replenished. As the water is stored below the rocks, it carries many impurities which are harmful of health. The natural outputs of ground water are springs and seepage to oceans
2) Surface water: The main source of the surface water is rivers, lakes, fresh water wetlands, ponds, streams etc. Surface water in rivers and lakes gets replenished with rains and melting snow. Rivers flow into the seas and streams.
What is the hardness level of water?
The water hardness is a traditional measure of the capacity of the water to react with soap. Hard water requires more soap to produce lather. It also leaves noticeable amounts of deposits of precipitates in containers. The water from various resources has different levels of hardness. The hardness of the water is caused by various dissolved polyvalent metallic ions like calcium, magnesium. Hardness of the water is generally expressed in terms of milligrams of calcium carbonate equivalent per litre. The primary sources of TDS are sedimentary rocks, seepages, and runoffs from soil. The hardness is generally calculated in four levels.
- Soft water : TDS < 60 mg/l
- Moderately Hard: TDS between 60-120 mg/l
- Hard: TDS between 120-180 mg/l
- Very Hard: TDS >180 mg/l
What are the different kinds of purifying technologies present in the market?
To purify the water and make it fit for drinking, there are various technologies available in the market. Some of the most used technologies are:
1) RO purification: The reverse osmosis purification process is one of the most commonly used purification process. It is used to remove TDS from the water and convert hard water into soft water. The main drawbacks of this process are that it may remove some essential salts from the water and the RO membrane needs regular maintenance and care to be taken. This technology is preferable where the water from the source is hard and contains high amounts of TDS.
2) UV purification: Ultra Violet rays purification process is carried with the help of a bulb which emits short UV rays. The bulb is placed inside the purifier. These radiations pass through the water and destroy the reproduction capacity of the micro organisms present in the water. Slowly, the number gets decreased and they get killed. The main drawback of this technique is that the bodies of the dead germs are needed to be cleared separately with the help of a membrane. It is mostly used where the water is not high in TDS.
3) UF purification: Ultra Filtration process is the next commonly preferred process by households. This method uses membranes similar to that of RO membranes but with a bigger pore size. These membranes efficiently remove all colloidal particles, germs and turbidity. It only fails to remove dissolved solids and salts. This method physically removes all the micro organisms and germs from the water. It is mostly used when the water is not hard and has low TDS.
4) Activated Carbon filter purification: This method uses activated carbon filters for purification of water. The carbon filters are used to remove chemicals like chlorine, pesticides and other impurities to greater extents. This filtration process changes odour and colour of the water. This technology unlike others works without electricity. The only drawback of this method is it cannot remove microbes efficiently. This technology is more used in the areas when chlorination is very high.
Which purification technology is best for home?
When you get to see multiple options, it is common to get confused. Among all the available purification technologies, you need to select one based on the water source present in your home. Based on the water purity and its hardness level, one can choose the type of filtration technique that is best suitable for their home. For example, if your water source is from groundwater, then it is best to use RO or UF filtration depending upon its hardness, as these two techniques are best to remove TDS from water.
Is company reliable?
Once, you decide on the technology, the next question is about the brand or the company to choose. The manufacturer is also important to consider before buying a purifier. To decide on the brand, you need to perform a little survey on various brands available and their features and services. After sale service is very important when choosing a company. Always consider the overall ratings on the e-commerce websites given by authorised users. Go through some of the reviews written, these will help you to get a basic idea of the product. Based on these you can decide whether the company is reliable or not.
Some other important tips before buying a water purifier:
- Tips to Choose Best Water Purifier in India
- Water Purifier & the Latest Filter Technology
- RO, UV, UF & TDS Water Purifier Pros and Cons
- Top 10 Water Purifier Manufacturers in India
Also read reviews of some water purifier company and know about their best products
- Aquaguard Water Purifier Reviews & Price Guide
- Kent Water Purifier Review & Price Guide
- Tata Swach Water Purifier Review & Price Guide
- Pureit Water Purifier Review & Price Guide
- Eureka Forbes Water Purifier Review & Price Guide
- Whirlpool Water Purifier Review & Price Guide
- Electrolux Water Purifier Review & Price Guide
- Bluebird Pure Water Purifier Review & Price Guide
- LG Water Purifier Review & Price Guide
- Philips Water Purifier Review & Price Guide
- Luminous Water Purifier Review & Price Guide
- Livpure Water Purifier Review & Price Guide
- ZeroB Water Purifier Review & Price Guide
- Kelvinator Water Purifier Review & Price Guide