It all comes down to potable or not potable i.e. fit for consumption

A water softener/treatment system wouldn't hurt, but not mandatory here. Lot of wells in this area contain hard water.

USGS - Water Hardness 

Alkalinity is okay 20-200 mg/L for drinking water. People in California pay $7 a gallon for alkaline water thinking it reduces acid in your body and has health benefits. Maybe you can sell some as fresh from the source?

Hardness is a little high  you have calcium and magnesium in the water it is NOT a health risk. Will make white laundry grey. Makes cleaning products less effective. You can filter this or use softeners in washing machine and dish washer like washing soda and borax. These form an insoluble precipitate with calcium and magnesium ions.  You have seen glass showers with a white milky film- that's hard water

The thing to worry about are lead, chromium and copper. The ph of the water might help keep down the scale in the water heater caused by the hardness

I don't know what the numbers mean, I'm sure there are guidelines. I do know that water softeners are quite common in my area, where we have wells. Personally, we don't have the hard water issue, but use a strong filter, as a choice, mostly for trace minerals and/or metals. 

Why not ask your new neighbors how they handle what is probably a similar issue with them?

Yes.

No.

Fred, I would not 'stress' about either but, do know that if someone has kidney disease, that hardness level can be tough on them. Because both levels really need to be adjusted, I would have a well specialist out to address both issues simultaneously.

We had coliform in ours and before it was treated, I took water out of the filtered refrigerator to fill my 30-oz water bottle. About 4 hours later, I was paying for that bottle of water...and having forgotten that the well hadn't been treated yet! LOL

Our public water appears to be hard but I do not know the levels.

The Google response for our county...

Montgomery County water is softened to approximately 9 grains per gallon (157 mg/L), and many of our customers do not find it necessary to use a water softener.

those numbers tell me nothing.  if the number on the right is 120 mg/L then your 9.5 is over 7 and most people would recommend a water softener if they sell water softeners.  But if soap bubbles up in the shower and detergent in the washing machine you don't really need one.  It's borderline. 

The alkaline being high is good.  It keeps water safe to drink and disolves minerals. 7.1 is near perfect for PH

Who said ask the neighbor? He will have the facts. All I got to say

I would just ignore all that nonesense and be happy that you have natural water that is superior to any thing you had in town.

Water the local water company for advice Fred. That's my best advice on this one.

I would defer to the water pro but it looks like a water softener is in their future.  Luckily not a big deal.

Based on the link Kathleen Daniels, Probate & Trust Specialist shared, that's not very hard.

Fred, 

I am clueless when it come to your numbers.  I do know that in Santa Barbara County we have very hard water, and we have a water softener.  In Napa we had a well, and water softener as well.  We also in both counties have a water filtering system.