There are many competitive water purification filters on the market today in point of use (POU) systems. It can be difficult to choose the method that would best suit your individual needs. Every manufacturer makes claims for the effectiveness and health benefits of their products. As you conduct your research, bear in mind that the EPA (Environmental Protection Agency) does not currently regulate or certify any POU water purification filters, so beware of false claims.
We begin our comparison of the various technologies with a look at the pros and cons of water distillation, sometimes the oldest method currently available in home water filtration systems. The distillation process is simple. Water is boiled and the resulting vapor vapor arises to a condenser. There it is cooled, condensed back into liquid form, collected and stored. Contaminants and sediments are left behind.
The largest advantage of distillation is that it can remove a wide variety of contaminants, including lead, fluoride, chlorine, chemicals, and organizations, producing water that is 99.9% pure. It is often used for industrial, scientific and commercial applications. When your dentist instructs you to rinse and spit, it's probably with distilled water. Water distillers, a tried and true technology, are widely available and come in a range of sizes and prices. There are manual, countertop units which produce one gallon per day, floor models which can produce and store up to ten gallons, and automatic inline systems which produce continuously and store the clean water in an under-sink reservoir. In spite of these advantages, distillation has some drawbacks.
Volatile organic compounds (VOCs), such as herbicides and pesticides have a lower boiling point than 100 degrees Celsius. Because of this, they may not only be transported over to the product water, but become concentrated in it. To counter this, many water distiller manufacturers add an activated charcoal filter, or a volatile gas vent.
Distillation also removes the oxygen and all minerals, including beneficial minerals which are vital for good health. This causes it to have a flat taste. There are available available which will restore the mineral content of the water, you can take a mineral supplement, or ensure that your diet is rich in foods with a high mineral content. The absence of minerals makes distilled water very aggressive, meaning it will dissolve substances, such as metals, with which it comes in contact. The safest way to store it is in glass containers. It is also absorbs carbon dioxide from the air making it even more aggressive and acidic.
That acidity has caused consider controversial. Distilled water has a low pH of 5.6 to 7. Some health care practitioners believe that high acidity in the human body can contribute to a number of diseases, including cancer. In addition, it is possible for highly acidic water to cause acidosis which can result in irreversible cell damage and lower bone density among other problems. It is, however, illegally the average person can ingest enough to pose a risk. Neutralizing solutions used to raise the pH, containing potassium or sodium, can also cause health problems. On the other side of the debate are health practitioners who assert that distilled water not only poses no health risks whatever, drinking it is highly beneficial. The reader is advised to do further research and draw their own concluding.
Finally, the largest disadvantage of distillation may be the high cost per gallon. The process requires a lot of energy. Approximately five gallons of tap water and two to five hours are needed to produce one gallon of distilled water. Along with the price of the unit, there may be an additional $ 0.25 to $ 0.35 per gallon in electrical costs. Since a water distiller will not function if there is a power outage, it may not be a good choice if you are concerned about emergency preparedness.
In conclusion, water distillers can provide water that is 99.9% pure. There are few other methods of water filtration that can match that performance. On the other hand, there are health concerns associated with the absence of minerals and the acidity of distilled water, and the cost per gallon is high. Take time to determine your needs and compare this water purification filter technology with the others available to choose the best one for you.