There are several different alternatives to reverse osmosis water systems that you should make yourself aware of. There are many different water systems out there, so much so that it can be overwhelming whenever you are trying to narrow it down to one. However, you will find that once you begin to understand the differences between a few of them that the process of narrowing it all down will be much simpler.
The process of reverse osmosis will depend on a semi permeable membrane through which there is pressurized water that is forced. Water is forced to go to a weaker saline solution from a stronger one. The end result with reverse osmosis is basically desalinated water that is on one side of the membrane while on the other there is a saline solution of water that is highly concentrated. This process will remove salt particles as well as other types of contaminants based on their size. Reverse osmosis will remove certain chemical components as well. However, it does not have the ability to get rid of multiple different contaminants in drinking water. For example, it is not suited for municipally treated water that most people get. Reverse osmosis cannot remove contaminants that are smaller in size than water.
The process of distillation will vaporize water by using a heat source. The heat source will separate any pure water molecules from the contaminants that have a higher boiling point than water. This process will boil water until it begins to evaporate. The water is then left at a constant. The evaporated water is then captured and is guided through tubes and then into a container. This method is very close to reverse osmosis. It removes things such as mercury, lead and arsenic. This method is preferred in developing countries where waterborne diseases are common. One of the cons about this process is the fact that it does not remove chlorine or its byproducts. They have a lower boiling point than water so they will remain.
There is a type of filter media that goes along with filtration. It will block the passage of the contaminants with an actual physical obstruction or a chemical adsorption. Adsorption will remove more and more contaminants with the more modern filtration technology that is around today. There are typically several stages that the water will go through to get rid of contaminants. The types of contaminants that can be removed are not limited to the type or the size with this method. This means that this method has the ability to remove the most contaminants while leaving healthy minerals in the drinking water. This method is also inexpensive and wastes very little water, especially in comparison to the aforementioned methods. There are several different types of filters that you can use. The solid block carbon filters are by far the most effective of all of the filters that are available for this method. Certain other filters do not have the ability to remove all contaminants.