Showing posts with label Purification. Show all posts
Showing posts with label Purification. Show all posts

Tuesday, July 19, 2011

What Are the Best Water Purification Systems For Home Use?


There are a number of water purification systems on the market. Do you need one? And how do you go about choosing the right one for you and your family?

These are two important questions you'll want answered before you spend your money on the wrong thing.

Let's take the first question, first.

Why You Need a Water Purification System!

Unless you've been living on some other planet, I'm sure you've been reading about the information that's come out recently about the lack of quality of our municipal water supplies.

Over 90% of U. S. water systems contain traces of at least 10 synthetic chemicals and lead. A report done recently by Ralph Nader stated, "after reviewing over 10,000 pages of EPA documents acquired through the Freedom of Information Act...[it was found that] over 2,300 chemicals that can cause cancer have been detected in U. S. tap water."

A number of scientists believe that this rise in carcinogenic chemicals found in our water supply correlated with the rise in cancers over the past fifty to one hundred years.

A big part of the problem is the age of our water treatment plants, and the technology they use.

Most water treatment plants in the United States are fifty to one hundred years old. Some even older!

They were designed to purify our water of things like cholera, not high-tech pesticides.

Most of our water is purified by letting the water settle through sediment to get out the particulate matter, then it's sterilized by injecting an amount of chlorine in the water.

The chlorine kills any bacteria that can cause disease. The chlorine is, however, actually left in the water after it leaves the treatment facility. This is done because the transit time from the treatment plant to your house could be as long as a week or more. In that time, your water could become re-contaminated.

The problem here is you actually drink the trace amounts of chlorine when you drink tap water. That's certainly better than getting sick with cholera, but there has to be a better way!

You're right, there is!

Now, before you run off thinking that bottled water is going to save you from drinking all of these contaminants and toxins, think again!

Unfortunately, most bottled water comes straight out of a tap, just like your water. As a matter of fact, there are fewer restrictions on the quality of bottled water than there are on the quality of tap water!

The bottom line: you need to re-filter your water at the tap before you drink it.

How to Choose the Right Water Purification System

There are a number of water purification systems out there. Some work better than others. Oddly enough, some work too well!

There are also whole house filters, filters you attach to one faucet, and water pitchers that filter water. Which one should you use?

Most pitcher filters use a water filtration system that's too simple. They just can't get out all the stuff you need filtered out!

If you're just interested in filtering the water you drink or cook with, then you might want to consider filtering the water from just one tap. Drinking water, however, is not the only way you get water-born impurities into your body!

Your skin is actually your body's largest organ! We don't usually think of our skin as an organ, like the liver, but it is!

We both discharge and absorb toxins through our skin. When you take a shower, for instance, the hot water opens up your pores allowing impurities in your water to seep in.

To sum up, you might want to really consider filtering all of the water in your house, either with a whole house filter, or with a filter for each tap and for each shower head.

Some of the technologies used in water filters are granular activated carbon filters, metallic alloy filters, microporous ceramic filters, carbon block resin filters, and ultra-thin membranes.

The best water filters on the market use a combination of these technologies to filter and purify your water.

One thing you need your filter to do is to leave in the trace minerals naturally found in water so that it tastes good and so that we get these minerals into our bodies. Minerals like calcium are necessary to our health, and drinking water with trace amounts of calcium in it is one of the ways our bodies acquire that mineral.

There are a number of water purification systems to choose from. What you need now is an informative website you can use to further educate yourself.

These are two important questions you'll want answered before you spend your money on the wrong thing.

Let's take the first question, first.

Why You Need a Water Purification System!

Unless you've been living on some other planet, I'm sure you've been reading about the information that's come out recently about the lack of quality of our municipal water supplies.

Over 90% of U. S. water systems contain traces of at least 10 synthetic chemicals and lead. A report done recently by Ralph Nader stated, "after reviewing over 10,000 pages of EPA documents acquired through the Freedom of Information Act...[it was found that] over 2,300 chemicals that can cause cancer have been detected in U. S. tap water."

A number of scientists believe that this rise in carcinogenic chemicals found in our water supply is correlated with the rise in cancers over the past fifty to one hundred years.

A big part of the problem is the age of our water treatment plants, and the technology they use.

Most water treatment plants in the United States are fifty to one hundred years old. Some even older!

They were designed to purify our water of things like cholera, not high-tech pesticides.

Most of our water is purified by letting the water settle through sediment to get out the particulate matter, then it's sterilized by injecting an amount of chlorine in the water.

The chlorine kills any bacteria that can cause disease. The chlorine is, however, actually left in the water after it leaves the treatment facility. This is done because the transit time from the treatment plant to your house could be as long as a week or more. In that time, your water could become re-contaminated.

The problem here is you actually drink the trace amounts of chlorine when you drink tap water. That's certainly better than getting sick with cholera, but there has to be a better way!

You're right, there is!

Now, before you run off thinking that bottled water is going to save you from drinking all of these contaminants and toxins, think again!

Unfortunately, most bottled water comes straight out of a tap, just like your water. As a matter of fact, there are fewer restrictions on the quality of bottled water than there are on the quality of tap water!

The bottom line: you need to re-filter your water at the tap before you drink it.

How to Choose the Right Water Purification System

There are a number of water purification systems out there. Some work better than others. Oddly enough, some work too well!

There are also whole house filters, filters you attach to one faucet, and water pitchers that filter water. Which one should you use?

Most pitcher filters use a water filtration system that's too simple. They just can't get out all the stuff you need filtered out!

If you're just interested in filtering the water you drink or cook with, then you might want to consider filtering the water from just one tap. Drinking water, however, is not the only way you get water-born impurities into your body!

Your skin is actually your body's largest organ! We don't usually think of our skin as an organ, like the liver, but it is!

We both discharge and absorb toxins through our skin. When you take a shower, for instance, the hot water opens up your pores allowing impurities in your water to seep in.

To sum up, you might want to really consider filtering all of the water in your house, either with a whole house filter, or with a filter for each tap and for each shower head.

Some of the technologies used in water filters are granular activated carbon filters, metallic alloy filters, microporous ceramic filters, carbon block resin filters, and ultra-thin membranes.

The best water filters on the market use a combination of these technologies to filter and purify your water.

One thing you need your filter to do is to leave in the trace minerals naturally found in water so that it tastes good and so that we get these minerals into our bodies. Minerals like calcium are necessary to our health, and drinking water with trace amounts of calcium in it is one of the ways our bodies acquire that mineral.

There are a number of water purification systems to choose from. What you need now is an informative website you can use to further educate yourself.




To learn more about water purification systems visit my website!

R. Lee Cole is an avid health and exercise enthusiast who loves to make his research available to everyone via the Internet. Check out Lee's website for more information about this important topic.





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Wednesday, July 13, 2011

Why Reverse Osmosis Water Systems Are Not Ideal For Home Water Purification


Reverse osmosis water filtration systems can certainly remove some of the harmful contaminants from your drinking water. However, many of the smaller toxins are not filtered out. Also, this type of filter takes out important trace minerals such as calcium and magnesium, leaving water devoid of its therapeutic value. That's why reverse osmosis is not the way to go for home water filtration.

It is highly important for you to start thinking about water and the many contaminants that reside in it. If you think that the water you drink from the tap or buy in bottles from the store are filtered enough, think again.

There are over 2,000 cancer-causing contaminants in the water coming from our water taps. This is the water you drink, cook with and shower in. Owning a filtration system for your home is the best way to ensure that the water you drink is clean and healthy. With this said, many consumers struggle with what type of system to invest in.

There are multi-stage units, distillers, purifiers and reverse osmosis water systems. Research shows that multi-stage water filters are ideal, but people continue to buy RO systems as they are unaware of the drawbacks.

As stated before, reverse osmosis water systems strip water of its natural minerals. When consumed, this water can cause negative things to happen to our bodies. First of all, water that lacks minerals is more acidic. Therefore, our body will pull minerals from other areas of our body, such as our teeth and bones to neutralize this abundance of acid. The second downfall of drinking this water is that this overabundance of acid increases our risks of cancer. This is because free radicals increase when our bodies aren't as alkaline as they should be. These free radicals are what lead to cancer.

Alkaline water has the most minerals. Therefore, that's what we should be putting into our bodies.

Making our bodies acidic goes beyond just drinking water by the glass. Showering in contaminated water is 2 to 3 times more toxic than drinking one glass of unfiltered water. If reverse osmosis water systems aren't able to remove the contaminants from the water we drink, they won't be able to remove the contaminants from the water we shower in either. This scary, but true fact makes it very clear how unhealthy unfiltered water can be for us.

The phenomena of reverse osmosis water systems began over 40 years ago, when this water was needed for industries such as printing and photo processing companies. These two industries were in need of mineral free water for the type of work they produced. Although this water continues to work for these purposes today, it is not healthy for human consumption, especially if you plan on making a habit of it.

Exposing water under pressure to a semi-permeable membrane starts the process of creating reverse osmosis water. This membrane has a very fine pore structure, which tends to reject certain contaminants, minerals and a large part of the water during the process. This strips the water of its inorganic compounds and trace minerals, leaving behind water that can be damaging to your body over time.

Synthetic chemicals are also contaminating our water. As mentioned earlier, reverse osmosis water systems remove contaminants based on molecular size. These synthetic chemicals have molecules much smaller than water molecules, making them impossible to be removed by this process.

Look for multi-stage water filter systems that eliminate the maximum amount of toxins while keeping the trace minerals in. Also, be sure to look for a performance data report detailing all of the contaminants removed.

Reverse osmosis water filtration is definitely not ideal for your family's heath...there are much better choices available.




Martin Spencer is a health researcher who has been studying water filtration for over 25 years. He is a regular contributor to Water Filtration Guide, a site dedicated to various methods of treating and purifying water. Learn about drawbacks of reverse osmosis water systems on our site.



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Thursday, July 7, 2011

Which Water Purification Systems Are Best? - A Comparison of the Three Most Common Technologies


Fresh water is essential to our health and comfort. Not only do we rely on it to stay hydrated, we use it in many other ways including bathing, cleaning and cooking food, and laundering our clothes. Fresh water has long been a concern of both public communities and private individuals, and several different water purification systems and treatment technologies have been developed to help ensure that tap water is safe for human consumption. But how do these different technologies compare?

Whether you get your water from a well or a city system, water sources can become contaminated by bacteria, runoff, and improper treatment. Even if water isn't contaminated, it may contain iron and other hard minerals that cause discoloration and can build up in the body, or chlorine that leaves an unpleasant odor and taste. Consequently, many people choose to treat or filter their water to improve flavor and protect against contaminants.

Chlorine is commonly used by municipal water treatment plants and is effective in killing many different bacteria. However, it is not effective against some organisms such as Cryposporidium and Giardia. Both of these organisms can be found in lakes, rivers, and ground water and can cause serious intestinal illness.

As mentioned, many people feel that chlorine leaves an unpleasant taste and smell. In addition, there have been numerous cases where the city water supply became contaminated despite the fact that it was treated. People with city water supplies often use other water purifiers and home water filters to ensure that their water is pure and tastes good. The three most common options are carbon filters, reverse osmosis water filters, and ultraviolet light water purification.

Each of these technologies uses a different approach to treat water, and they each have different levels of effectiveness against various contaminants. One may work well to remove chemicals but be completely ineffective against bacteria, and vice versa.

In reality, there is no single filter or treatment that will eliminate every contaminant from your water. The best approach is to have your water tested for contaminants and then purchase a home water purifier that guards against the particular contaminants that cause you concern.

Another option is to combine treatment technologies. Most higher-end systems use a combination of carbon filters and one of the other treatment technologies to achieve the best results. Let's look at the different technologies to see where each is effective.

Carbon Filters

Carbon is one of the most powerful absorbents available and it has been used for many years as a means of removing impurities. The absorbing powers of carbon can be further enhanced by adding a slightly positive electrical charge. This is known as activated carbon, and it is used in many standard home water filters. As the water passes over the positively charged carbon, the negative ions of the contaminants are drawn to the surface of the carbon granules and removed from the water.

Activated carbon filters typically use granular activated carbon (GAC) or powdered block carbon. Both work well for filtering and purifying but carbon block filters have been shown to remove more contaminants. Either type of activated carbon filters help reduce or remove a wide variety of contaminants, including:

o volatile organic chemicals (VOCs)

o pesticides and herbicides

o chlorine, radon, and other chemicals often found in tap water.

All of this protection comes in a relatively inexpensive package. You can purchase carbon filter systems that fit on your faucet for about $30, or you can choose a whole house water purification system that utilizes carbon filter technology for around $100.

However, unless they are densely compacted, most carbon block filters are not effective at removing heavy metals or bacteria. For this reason, many people consider combining carbon filters with one of the other types of water purification systems.

Reverse Osmosis Water Filters

Reverse osmosis, also known as hyperfiltration or ultra-filtration, was developed with U.S. government funding as a means of desalinating ocean water. A reverse osmosis water purifier uses a semi-permeable membrane that allows pure water to pass through it, while contaminants are trapped by the tiny pores in the membrane.

The process requires that the water be pressurized to help force it through the membrane. Most standard residential water systems have sufficient pressure. Like activated carbon filters, reverse osmosis also uses charged particles to help filter out impurities.

The effectiveness of a reverse osmosis water purifier depends on the density of the membrane. A membrane with larger pores will obviously let larger impurities pass through. It is also important that the membrane be cleaned regularly for proper functioning.

Higher quality reverse osmosis water filters use a process known as crossflow to allow the membrane to continually clean itself. Crossflow directs some of the water downstream from the membrane, sweeping the rejected contaminants away so they do not build up and block the membrane.

There are two types of membranes commonly used in reverse osmosis water filters --Thin Film Composite (TFC) and Cellulose Triacetate (CTA). TFC membranes are noticeably more effective the CTA membranes but they tend to be less resistant to the deteriorating effects of chlorine. This problem can be avoided by using an activated carbon pre-filter to remove the chlorine first.

Reverse osmosis water purifiers come in different sizes and styles including countertop and whole house water purification systems. They are capable of filtering out a long list of contaminants including:

o chlorine and other treatment related products

o bacteria

o salts, sugars, proteins

o dyes

o heavy metals

One drawback of reverse osmosis water filters is that they are more expensive than carbon filter treatment systems, with the average home system costing around $300. Also, the purification process is usually somewhat slow due to the use of pressurized water. It can take an entire day to produce 15 gallons of purified water. And a typical reverse osmosis water purifier may need up to 8 gallons of untreated water to generate a single gallon of purified water.

UV Water Purification

As the name implies, ultraviolet light water purification systems use ultraviolet (UV) light to treat water and render microorganisms harmless. The UV light comes from a high intensity lamp that is usually enclosed in a protective quartz sleeve. When water passes through the water treatment system, the UV light damages the structure of any organisms and makes them sterile.

Although a UV water purifier requires electricity to operate, it draws about the same amount of energy as a light bulb. However, the lamp bulb itself needs to be replaced every year to ensure adequate intensity.

While whole house UV water purification systems are effective on most bacteria, viruses, molds, algae and other organisms, they do not remove chlorine, heavy metals, VOCs, or other chemicals. And countertop UV systems, which expose the water to UV lighting for less time, do not always remove all organisms.

UV water purifiers average around $700 for a whole house system, making them more expensive initially than other types of treatments. In addition, without a pre-filter system, contaminants can build up and reduce the intensity of the UV lamp. For these reasons, many people combine UV water purification systems with carbon filters, which also increases the costs.

As you can see, each of the three common water treatment technologies has its advantages and drawbacks. Deciding which is best depends on your budget and the type of water contaminants you want to remove or prevent. A test of your tap water will help you determine the appropriate water filtration system for your needs.




About the Author:
C.J. Gustafson is a successful writer for Water-Filters-N-Purifiers.com, providing consumer information on home water filters and water purification systems. She has researched and compared a variety of?systems such as reverse osmosis water filters to help remove iron from her well water.



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