While the city does a tremendous job trying to address every contaminant, they can only do so much. It is up to you the homeowner to take responsibility for your families needs.
Your options are:
Softeners which are found at retail stores, online, and private companies. Softeners are old technology that were developed for the water a century ago. The water is not the same and continues to change and be complex, so a softener would only give you a band-aid for your concerns.
Hard water filtration systems help and remove a bit of contaminants, however if not properly maintained they can be feeding grounds for bacteria which leads to undesired effects to your family.
Conditioners are the most popular from private companies with pushy salesmen. This option leads to years of maintenance issues and traps the customer with proprietary parts including filters and service, if not complied with, leads to threats to void any warranty the company gives.