Nitrate level 12.93 at my household tap. Conductivity 968.5. Community well.

I'm looking at reverse osmosis at the kitchen sink to deal with the nitrates. My concern is that the minerals in our hard water (328) are not a health issue and can actually provide benefit. I was looking at keeping hard water at the kitchen sink when installing a water softener. There seem to be mixed reviews between the benefits of minerals in hard water versus drinking softened water. Is there a way to filter nitrates but keep the healthy minerals in the water? Reverse osmosis seems to take it all out.

Could high conductivity be because of elevated nitrates? Are there other tests that should be done based on higher conductivity?

I also have a post from yesterday water filter/softener. If there are any suggestions to that post as well it would be greatly appreciated.

Thanks so much.