> No, use spring water. The water needs to be very 'hard'. If it is not,
> add minerals. Those are available at the brewing store or you can add a
> little 'terra alba' (food grade gypsum) or epsom salts. Spring water is
> by far the best.
This is why I think Heartwood water will be very good for brewing. It is
spring water will loaded with Limestone. I had to give my tea pot a good
scrubbing several times.