| Reverse osmosis home systems are one of the | | | | needed to force water through the membrane as |
| most commonly used water purification methods | | | | it uses no electricity. |
| in residential areas. It is known to remove a | | | | In terms of reverse osmosis costs, it is very |
| number of water contaminants, however, is it | | | | wasteful of water. For every gallon of water |
| really worth your money? | | | | produced, two to four gallons of water are |
| How do reverse osmosis home systems work in | | | | wasted. It also requires frequent maintenance as |
| the first place? Reverse osmosis uses water | | | | damage to the integrity of the membrane can be |
| pressure to push water through a semi-permeable | | | | very dangerous. |
| material. This serves as a barrier to prevent | | | | It is also hard to tell if the membrane and the |
| contaminants from getting to the other side | | | | system are functioning properly or not. Pre-filters |
| where purified water passes through. | | | | and post-filters and the membrane itself must be |
| Water molecules and substances with smaller | | | | changed periodically based on the instructions |
| molecules are allowed to pass through the | | | | given and the storage tank must also be cleaned |
| membrane while substances with heavier and | | | | regularly. |
| bigger molecules are retained. Reverse osmosis is | | | | It would seem that reverse osmosis home |
| effective in removing metals and some volatile | | | | systems are not cost-effective because of the |
| organic chemicals (VOC's) in water. | | | | high maintenance required as the large quantities |
| However, chlorine and other VOC's are permitted | | | | of water wasted. There are other systems more |
| to pass through the membrane because their | | | | effective in eliminating water contaminants like |
| molecules are smaller than that of water. | | | | water filtration. |
| In addition, reverse osmosis home systems also | | | | Water filtration systems, specifically those that |
| remove all the minerals in water, whether good or | | | | use carbon filters, sub micron filtration, and ion |
| bad. Minerals like calcium, iron, and magnesium that | | | | exchange are very effective in getting rid of |
| are essential for the body are removed, making | | | | chlorine, VOC's, metals, and pathogens in water. In |
| the water taste unpleasant and unhealthy. | | | | addition, this kind of system does not require too |
| The membrane for reverse home osmosis | | | | much maintenance and is cheaper compared to |
| systems is greatly affected by several factors, | | | | reverse osmosis. It doesn't waste water, and it |
| including concentration of contaminants, type of | | | | doesn't strip water of essential nutrients needed |
| membrane, and conditions like water pH, | | | | for different body functions. |
| temperature, and pressure. A high pressure is | | | | |