Bottleless water dispenser

Approximately 2,100 carcinogenic chemicals are found in tap water at a single point of time. With the aid of bottle less water dispenser the amount of microbes, organic contaminants and heavy metals, has been reduced.
The main reason behind the use of bottle less water dispenser is because not all the filters can remove the tough containments easily, which is the foremost problem. The majorities just specializes in a few contaminant kinds and are ineffective to manage the rest.
Let's have an example of an ordinary filter. It functions by pushing water to move through a membrane which comprises pores that are small enough to grant water molecules to pass across and stop anything bigger than that. As a result dirt & heavy metals, organic matter etc are efficaciously strained from the water by way of this membrane.
But the problem is with chemicals like chlorine and ethical drug that have quite small molecules. They also pass through the membrane pores and can be detected in the drinkable water also.