Drinking water is a need and Pakistan does not have very clean water in the taps. To counter this, people make use of water filters, with the reverse osmosis water filter type being the most common. These filters have multiple levels of cleaning, with at least 4 being the basic amount needed. A water filter needs to be maintained so it can clean the water properly. The price of a reverse osmosis water filter depends on the specific one you choose, with prices starting at the lower end.
Reverse osmosis water filter
Pakistan does not have clean water available easily, which is why a lot of people make use of water filters. These water filters help remove suspended particles and bacteria, and the most commonly used kind is a reverse osmosis water filter. It is called reverse osmosis due to the fact that generally water moves from high to low concentration across a semipermeable membrane; in this instance, it is forced to move against that gradient across a semipermeable membrane. Thus leaving behind dirt.
Reverse osmosis cleans the water enough to make it drinkable and most experts agree there should be at least 4 stages of cleaning. Starting at the sediment pre-filter to get rid of larger particles. The next is a carbon block pre-filter that removes the chlorine so the water does not taste odd. Also, the chlorine can damage the reverse osmosis membrane, which is why it needs to be removed.
After this comes the reverse osmosis membrane where the water is forced through by the pressure, this leaves behind contaminants and the last is a carbon block post-filter. This last stage removes the remaining unwanted smells and flavours.
The filter system inside a reverse osmosis water filter needs to be changed every 6 to 9 months. When the water flow starts to get constricted that means the filters need to be changed. One can also opt for models that have 9 stages of filtration if they want to be super careful with cleaning their water.
The price of a reverse osmosis water filter depends on the exact one you choose, the number of stages and size affect the price. The prices range from the lower end all the way to the top.