u/Parking-Shift-6951

I have an existing 240vac 15amp three wire well pump controller on a dedicated circuit. A few years ago, I installed a water softener that requires 120vac, .3amps from a 12vdc converter. The water softener is plugged into 120vac circuit that is the only thing near it which includes a sump pump and a few other things. A couple times, the sump circuit tripped. A while later, my water tasted terrible and I realized I had to reset the GFI on that circuit.

In Ohio, is it legal code to have the dedicated 240vac circuit in place and pull one leg from it along with a dedicated neutral to power a 15amp 120vac dedicated outlet for the softener?