These reports are nice, but useless when it comes to figuring out what is really in your water, at your tap. What may be there one week may be gone the next. The reports are just a snapshot in time... and always are the snapshot that comply with Federal regulations!
For example, my water is normally 80-90 ppm TDS
out of the tap. For about a 3 week stretch this summer, it went down to 20-30ppm, then went back to 80-90. I've also had nitrates come and go. Water quality will also depend on the pipes in your house.
In the end, if you want consistent water parameters, an RO
filter is the only way to guarantee your water is good. Many people use tap water (treated with a dechlorinator) with no issues, but I wouldn't really let the water quality make the decision for you.