Hey guys, I got the answer from the source...the water source, that is, the water quality specialist from PA American Water Co for the Pgh region. Here are the #'s she gave me:
The PAWC web site only had #'s for pH=7.6 and Na=35ppm.
She told me their lab is not required to gather data on Bicarbonate, Ca, and Mg. She ran those tests on my behalf last week. Water samples from their plant are sent to their central lab twice a year where they analyze Ca and Mg, but they run Cl and SO4 weekly. They post a typical water quality analysis on their website at least every quarter with the most current information. She said she may try to run these parameters monthly or bimonthly so they can have this data readily available.
I don't want to give out her contact info here...you can get that info on their site. Further discussions of this topic appear on the TRASH facebook page.