If you’ve been learning a little about water filters because you’re convinced of the benefits of drinking clean purified water you will have come across “charcoal water filters” or “carbon water filters” or “activated carbon water filters”. What are these?

Charcoal is a substance created by heating organic matter to high temperature in the absence of oxygen and a charcoal water filter is one that uses charcoal for the filtration process. The organic material commonly used is coconut husks.

There are various properties to carbon, and the one that is important for the purposed of water purification is that it is extremely porous, having huge numbers of tiny holes. This allows the water and it’s contaminants to pass through the holes and come into contact with the carbon. The contaminants are chemically attracted to the carbon and so are “absorbed” by it, and don’t pass through.

That is what charcoal, or carbon, water filters are. So what are activated carbon, or what is known as AC, filters? These filters use a form of carbon that is way more porous than normal carbon, and this is created during the manufacturing process.

Is it possible that there are drugs in your drinking water? Surely it’s not possible that when you drink a glass of water you’re drinking drugs? Lets take a look at the possibility that there are drugs in drinking water in the US.

How about we begin with a quote from the Ralph Nader Institute. “U.S. drinking water contains more than 2,100 toxic chemicals that can cause cancer.”

Now of course “toxic chemicals” may not include drugs, but it’s a pretty scary place to start the discussion. However there is plenty of other evidence that there are drugs found in drinking water in mainstream water supplies. Particularly antibiotics.

Strangely, some of the evidence for drugs in drinking water comes from a high school student. In 1999 a West Virginia high school student decided to do a science project for school by testing for levels of antibiotics in rivers. Ashley Mulroy tested for the antibiotics penicillin, tetracycline and vancomycin in water by taking samples over a 10 week period from the Ohio river and having them tested. The antibiotics were found in all samples.

So she decided to test tap water for antibiotics, and got the same result.