As kind of a background to the whole residential water supply filtration issue, I am going to introduce the main methods of filtration over the next few posts, so that we can later discuss and compare them, and so that all of our visitors have the required background information to make informed decisions. Today we are going to take a closer look at charcoal based filtration.

There are several types of charcoal water file; the best performing, yet lowest flow rate type of charcoal filter will use a solidified block of carbon, much like a honeycomb. Next we have Activated Silver Impregnated Charcoal, which is often known as Chlorgon. This type of filtration system brings chlorine exclusion and an anti-bacterial system to the table, making it a great choice for cleaning biological and chemical toxins from a water supply. Lastly, we have a loose carbon type filter, which is often the cheapest, yet least effective form of filtration.

It is important to note that charcoal based filtration systems only remove impurities from a water supply, they cannot be used to change the pH balance of the water, and so if you have a rather acidic water supply to start with, you will still have an acidic supply once it has been filtered.

Carbon filters can also be susceptible to a build up of mould within the filter unit, you need to remember that a filtration unit is basically removing all of the garbage from your water supply; this garbage builds up in the actual filter, which means it will require maintenance from time to time. Taste is a good indication of the state of your charcoal filter, when the water starts to taste anything but good, then it is time to change the filter. Carbon based filtration units also lose effectiveness over time, so it is important to change the filter regularly to maintain a continuous supply of healthy, clean water.

Overall, carbon based filtration systems work very well with a residential water supply, and are among the easiest and cheapest to maintain.