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Gravity filters use a two-chamber setup to purify water. First, water is poured into a top chamber. Beneath this chamber is a filter, and beneath the filter is a second chamber. After water is deposited in the top chamber, the force of gravity causes it to pass through the filter underneath. After the water has passed through the filter, the second chamber collects the purified water.

Here are some things to consider regarding gravity filters.

They function without the aid of plumbing or electricity. Gravity water filters don't need plumbing or electricity to cleanse water. All filtration is accomplished using the force of gravity.

They're easy to assemble. Most gravity filters can be put together in just a couple of minutes. Typically, the assembly process does not require tools.

They're an excellent choice for providing clean water in emergencies. Since gravity water filters don't require electricity, they're a great choice for a filtration system that will provide potable water in an emergency.

They require minimal maintenance. There aren't a lot of moving parts to worry about with gravity water filters. The only component that requires regular attention is the filter itself. It's recommended that you change the filter in this system at least once a year.

They effectively filter a wide range of contaminants. Gravity water filters cleanse water of parasites and bacteria that cause diseases such as typhoid, cholera, and dysentery. They also banish chemicals, such as chlorine and fluoride, and they free water of heavy metals, such as mercury, lead, and copper.

They come in a variety of sizes. Gravity filters comes in various sizes. Some units are small enough to take with you on camping trips. Other units are designed to filter water for the entire household.

Stainless-steel and ceramic models are available, as well as gravity bag water filters. Most gravity filters are made with stainless steel, but ceramic models are also offered. Some believe that ceramic gravity filters produce better-tasting water, and they're also recommended for those with chemical sensitivities. The smallest gravity filters use bags, and these are the most portable filtration systems.

They vary in terms of how fast they filter water. Different gravity filters offer varying rates of filtration. Some units can filter up to 16 ounces of water per minute, while other units take longer to cleanse it.

Different filter elements are available. Gravity filtration systems can be customized to cleanse specific chemicals or pathogens. For example, some filters are designed to primarily remove chlorine, while others are crafted to banish pesticides, nitrates, and heavy metals.

External gravity filtration systems are available. Most gravity filtration systems are built to fit on a countertop, but it's possible to set up a larger external system. This system uses two large tanks and a filter to cleanse water, and it's attached to the main water line.

Cost and Installation


Countertop gravity filtration systems start at around $100, and larger models can cost $300 or more. An external gravity filtration system can cost several-hundred dollars to install.

Most countertop systems can be set up without professional help. External gravity filtration systems will require the assistance of a plumber. Expect to pay $45-$65 an hour for a plumber's services.
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