If you are still in or near Vermilion, your water is likely from Lake Erie, moderately hard and nicely buffered to pH 7.6-7.8...not bad for many FW fish. Unless you have "dont drink the water" signs posted in your building, the "water in the building" is usually not an issue because running it for a few seconds flushes the pipes anyway. I would run the water for 30 seconds then use it....dechlorinated of course.
I live in Dayton now. it's probably just me being weird over the building being old than actual water quality lol.
I'll test the tap when I test the reef today. It is going to be a nano high tech planted system (as much as 5gal can be, I'm sure it will be upgraded to a 20 long at some point) would adding plant ferts reconstitute the water?