Subject: How can I promote healthy microbes for plants?

Dear Mad Scientist,

I know that tap water contains chlorine and other additives to discourage 
microbes in our water supply. And I also know that microbes in the soil 
supply nutrients and keep plants healthy. So my question is: if I water my 
plants with tap water, am I killing beneficial microbes? Short of building 
a still, is there a way to reduce the amount of antimicrobial chemicals in 
tap water? Do commercially sold water filters do this?

Thank you for considering my question,

Jared

Re: How can I promote healthy microbes for plants?