Water is the basic necessity for sustaining life on earth. Despite having an abundance of water, the water which runs through the taps in our households are not filtered, which causes a lot of water-borne diseases. A gravity-based water purifier comes in handy in this scenario, as it is a water purifier that does not require any sort of electricity to function and also is really low maintenance. There are a lot of water purifiers, and you would only want to invest in the best gravity water purifier, therefore this review and function guide is the one-stop solution for all your queries.
How Does A Gravity Based Water Purifier Work?
The first and the most common question which is asked by literally anyone who is in search of a gravity-based water purifier is how does it work. To understand the technical working of gravity-based water purifiers, we must first understand that any gravity-based water purifier uses gravity. No gravity-based water purifier operates using electricity, instead of that, it uses a thing called activated carbon or UF. Activated carbon is made from carbon granules of a small size that absorb impurities that are present in the water. UF is constructed of a bunch of hollow fibers and when the water passes through these hollow fibers, the impurities in the water stick to it.
These machines usually are made of a bipartite body, which means that it has two units – the upper unit and the lower unit. Using the normal gravity process, the water is poured into the upper part of the machine, and then allowed to sit for some time, and there is a filter mesh which is present in the filter itself which literally filters out the impurities in the water. This microfiber mesh is usually quite potent and therefore can suck out all impurities in the water. The water then travels down to the lower part of the gravity-based water purifier, and is ready for consumption.
The fiber mesh that is used in the water filter is basically a kind of cloth that acts as a sieve and removes all particles including visible dirt. Activated Carbon Module is similar to charcoal filtering which was used before, and it removes any other dirt, dust particles and impurities from pesticides. It then employs the polisher modules present in the filter and completely removes any chlorine or other undissolved chemicals.
A lot of gravity-based water purifiers also come with UF technology as well which is basically another filtration process. An UF Membrane has micropores of 0.1 microns which as you can guess is small enough to filter out all sorts of microorganisms like cysts and bacteria. Getting a water filter can be tricky, but we definitely recommend getting a UF based machine if you are going for a gravity-based water purifier. The water from gravity-based filters are hugely better than boiled water and much safer than water that is chemically purified. While most of the water sources in India come from municipally treated water, you can doubly purify it by pouring it into the water purifier.
Best Non-Electric Water Purifier
The best part of having a water purifier that does not use gravity to purify the water is that it does not need any sort of installation, and can be put to use right away. Eureka Forbes is a company that has been in the market long enough to make a good name in water filters, and the Eureka Forbes Aquasure from Aquaguard Amrit 20-Litre Water Purifier is a powerhouse in this regard.
It is equipped with an auto-shutting purification process which shuts off once the purification process is complete and has a cartridge filter life of 750 Liters which is quite a good capacity. This purifier is ergonomically designed and has two tanks, with capacities of 9 litres and 11 litres respectively.
- Auto-shutting purification process
- Cartridge filter life of 750 litres
- Ergonomic design
- Low life cartridge
- Does not have RO-UV purification
The top micro-mesh present in the top chamber of the Tata Swach Non-Electric Cristella Plus 18-Litre Gravity Based Water Purifier is literally so powerful that it can instantly suck out all the bacteria and the minutest visible impurities and provide you with good drinking water. The cartridge of this gravity-based water purifier has a purification capacity of 3000 liters, which is quite good.
It comes with silver nanotechnology which effectively destroys all bacteria and viruses keeping in accordance with the USEPA guideline without requiring electricity or running water. It has a capacity of 18 liters total, with the top and bottom part both having a maximum capacity of 9 liters each. The body of this water filter is made with food-grade plastic which is quite hygienic.
- Purification capacity of 3000 liters
- Silver nanotechnology filtering
- Food grade plastic build
- Can leak if not installed properly
- The filtering process is a bit slow
KENT is a brand that is widely renowned for constructing expert water purifiers, and the KENT Gold 20-Litres UF technology-based Gravity Water Purifier is no less because it is one of the best gravity-based water purifiers in India. It performs the purification in the filter through a hollow fiber ultra filtration membrane which is very potent.
It is equipped with a filter of nano-silver carbon which is proven to provide better disinfection of water and kills all germs. The long-life membrane (or the cartridge of the filter) is expected to last up to 4000 Litres, which increases the longevity of each cartridge and you don’t have to change it frequently. The transparent tank of the filter is made of unbreakable ABS food-grade plastic and the high base stand makes the positioning of glass easy while drawing water.
- Nanosilver carbon membrane filter
- Long cartridge life of 4000 litres
- Unbreakable ABS food-grade plastic body
- High base stand
- Sediment filter needs to be changed after every 10 days
- High maintenance
- Servicing is poor
If you are looking for a gravity-based water filter that has a sleek and stylish design, then the NEXQUA Dew Non-Electric Ultra Filtration (UF) Based Gravity Water Filter and Purifier might be the best fit for you. If you have a large family, you can be assured that this will work for you because the purifier is equipped with an enhanced storage capacity of 14 liters which ensures that you always get drinking water that is readily available at all times.
As you can already guess, this gravity-based water filter and purifier gives you ultrafiltration(UF) membrane-based water purification and is totally non-electric gravity-based and provides a chemical-free water purification which is much more hygienic than other water filters.
- Sleek design
- Storage capacity of 14 litres
- Ultra Filtration (UF) membrane-based water purification
- User manual is missing in the package
- Not easy to install
We have always heard of stainless steel being one of the best materials to store any kind of food because of its non-reactive and hygiene factor, along with the fact that it is literally very durable. It is this property that makes the NEXQUA Dew Stainless Steel Non-electric Gravity Water Filter and Purifier worth investing in.
This gravity-based water purifier is constructed out of a durable and long-lasting stainless steel container which calls for very easy maintenance and serves you the purest drinking water which is free from microorganisms or bacteria or any chemicals. It also weeds out the pesticides and the harmful chlorination which is used to disinfect water.
It is very economical, and has a low running cost & does not require electricity, and is, therefore, a much cheaper option which will provide you with safe and crystal clear drinking water.
- Stainless steel body
- Provides powerful filtration
- Candle quality is bad
- No instruction booklet
While there are so many products which promise you a good result, for something which sustains your body, you must always invest in a good water purifier for the best results. Any impurities in water basically damages your entire functioning of the body with unnecessary problems and diseases. Therefore, the aforementioned filters have been chosen very carefully to not leave a trace of impurities so that you can have the best experience with these water filters.