After some thought about this all and looking at the plumbing on this house adding a carbon block filter to the house plumbing and adding another spigot... not going to happen but I could rig up the filter just for my brewing... i.e. hose from outdoor spigot thru filter into HLT. Gets SWMBO off my back about buying water (even at $0.37 per gallon... she can't understand it. I tried comparing using crappy water for brewing to using duct tape and elmers glue for scrapbooking... LOL that one got me in a bigger hole). She actually suggested getting a filter.
Anyways, I ran off on a tangent there. I was thinking about sending two samples of water in to be tested by Ward Labs. The first being non filtered hard water and the second being water filtered with the carbon block filter. Should give me some good info to work with right? But now the cheap ass in me is kicking in. Do I really need the homebrewers test or can I get away with just he household test?