Get some quality sw
test kits and test the water after it's been mixed to 1.025 (checked by a refractometer). for pH, Alk
(phosphate), nitrite and nitrate.
Home testing kits are meant to give you numbers safe for human consumption. Based on your current numbers I would say the water if OK. But what will the numbers be a month from now, or a year from now?
Well water comes from an underground aquifer. That aquifer could become contaminated upstream and the plum would travel down to you in time.
Your numbers seem to be from a simple lab test. In NJ a much more complete and complex lab test for known carcinogens must be done (on a sale of the home). That test cost ~$1,000.