Originally Posted by zscalf
Going to be sending in a sample of my tap water for a report soon and I have a dumb question... when using is to brew I send it through a carbon filter. Should I send the lab filtered or unfiltered water? I'm thinking filtered...whats everyone else do?
Well, you want to know what you are using, right? And you're using carbon-filtered water...
If you don't mind paying, it might be interesting to see both pre and post filtered waters. But, if that is not feasible, just send the filtered water if you plan on continuing to filter it before brewing.