If you think that all whole house water filtration systems are the same, you need some more information. There are companies that have been in business for 15 years, long before the idea of home purification became popular. There are also a lot of newcomers.
The industry is not very well regulated in most of the United States. Only California requires that companies provide complete information concerning contaminant reduction and the on-going cost of replacement cartridges. Some of those newcomers that I mentioned avoid doing business in the state because of that requirement.
It’s one thing to “say” that your whole house water filtration systems are effective. It’s another thing to prove it. Companies can have their products tested by independent laboratories “if” they choose to. They are not required to and the ones that are trying to rip you off don’t have the testing done.
If a company’s performance claims are valid, they should have certification by Underwriter’s (UL) or the National Sanitation Foundation (NSF). The trade group WQA (Water Quality Authority) allows manufacturers to claim certification without requiring sufficient data and without full compliance with industry standards. So, look for UL or NSF certifications. If a company only has a WQA certification, you cannot be sure that you are getting an effective product.
Although they are not as popular as they once were, for many reasons, there are still a number of whole house water filtration systems that include a reverse osmosis step. That step really drives the price up, but it also de-mineralizes the water and health experts say that drinking de-mineralized waters leads to mineral deficiencies. It creates an acid pH level in the mouth and stomach, aggravating conditions like acid reflux disease.
When you think about it, there is no naturally occurring water in the world that is “mineral-free”. So, obviously, humans were not meant to drink water with a trace mineral content. Even the World Health Organization says that drinking-water should have a trace mineral-content. If you are not concerned about your health, you might be concerned about the taste, which is stale unless minerals are present.
People who have effective and affordable whole house water filtration systems are very happy with them. Maintenance requirements are few. Cost of use is low. Showering “feels” better and many skin conditions start to improve. People with allergies and asthma feel better. It’s a win for everyone.
People who buy reverse osmosis units are often unhappy. Lots of maintenance is required and the systems break down easily. The cost of use is high and the systems require electricity to operate. So, electric bills go up. Gallons of wastewater are created. So, those of us that are trying to go “green” avoid these products.
So, it should be easy to see that all whole house water filtration systems are not the same. Now, you can make an informed selection.
An Ezine article

March 11, 2010
Recent scientific reports have revealed that hormones are present in our water supplies, really I hear you ask? Think about it, chemicals and drugs are disposed all to easily and when you think that most water is recycled at some point is there any wonder that traces of hormones will be found?