That's just what it is, a quality or health report to assure customers the water is safe to drink. Unfortunately it has little or no value from the standpoint of brewing. What you need is a report that includes all of the important brewing ions and their concentrations in the water. Do you know the specific source of your tap water? If it is from surface water the overall content of the water will probably be somewhat similar to Providence Water
which happens to be my water source.
If wells are the source you might ask the water department for a report that looks like the one in the above link. Failing that do a search for Ward Lab and send them a sample for analysis.
This link Water And Homebrewing
has very good information to get you started understanding water and brewing.