Originally Posted by Czm
I still don't get how much by boiling would reduce my HCO3. From what I've read is if I boiled I'd lose 80or 60? so would I see 187.4 or 200.4 HCO3? From that Calculation my Ca would be about 23?
You got part of the calculation correct, the Ca would drop to a fairly low level. But you didn't catch that the HCO3 drops to around 60 to 80 ppm. You don't subtract 60 to 80 ppm from the original concentration. The original concentration drops to between 60 and 80 ppm. Its simpler than you assumed!
After boiling, that water is fit for a lot more styles! Its just that boiling is a PITA and takes time and money to heat it, cool it, decant it, etc. But...it works with a water like this that has a huge percentage of temporary hardness.