A person should consume at least two liters of water per day. If you multiply this figure by the number of people in the family, you can get the amount of water that should be in the house every day. Everyone knows that the composition of tap water is far from ideal, and it is dangerous to use it as a drink. It is necessary to choose a household filter so that there is always access to purified, good water.
Instructions
Step 1
There are no universal filters. Various devices of this type are designed for different contaminants, different volumes of water, use individual cleaning methods. It is necessary to choose a filter for a house according to certain criteria. First of all, it is the chemical composition of tap water. Before you buy a water filter, you need to determine which components need to be cleaned. Make a chemical analysis of water by ordering such a service from specialized companies, or use information on the composition and quality of water in your area of the city.
Step 2
Determine what quality of water purification you need. You can simply reduce the content of some components in the water, or you can carry out the maximum degree of purification. The degree of purification depends on the stages in the filter, which the water goes through during filtration. Flow systems have three to eight stages, jugs have only one stage. The more the number of filtration layers, the better the water quality.
Step 3
Determine the amount of water you need daily. To do this, multiply 2.5-3 liters by the number of people living in the house. It is advisable to select a filter not for the amount received, but with a threefold reserve, since the need for water may be uneven. For one or two people, a filter-jug is enough, in which water is purified by overflowing from the upper container to the lower one through the sorbent layer. For a small number of people, you can also install a nozzle on a tap, it is much easier to use, but the performance of such a filter, like a jug, is low. For large families, it is recommended to install stationary water purifiers that purify by reverse osmosis. They are built into the water supply system, and a separate tap is led out into the sink.
Step 4
Popular brands of pitcher filters are Barrier, Aquaphor and Brita. Manufacturers also produce separate filter cassettes with different functions. For example, “Barrier” household filters can be equipped with “Fluorine +”, “Iron”, “Hardness” and “Standard” cassettes. This is where knowledge of the chemical composition of water comes in handy.
Step 5
Determine the cash cost of the filter. This item includes not only the cost of the equipment itself, but also the cost of operation. Remember that it is necessary to regularly replace cartridges or cassettes in filters, carry out service, change parts and reagents. In-line filters with several stages of cleaning are more expensive than filter jugs or nozzles on the faucet. Calculate what a liter of water will cost you with a particular treatment system and draw a conclusion based on your financial capabilities.
