Is a water sterylizer the same as a water filtering system or softner?

Basically, a water sterilizer is used to produce sterilized water. This is getting rid of living organisms. In order to prepare this, the water is filtered through 0.2 micron filter which would remove the microorganisms like bacteria, fungi, etc. On the other hand, a water filter system is used get rid of the chemical contaminants with the use of www.aquasafe.com.au water filters.