I'd be concerned about things like Legionella, and only use it for non-potable water and/or grey water. What about using overage to pump water from a well into an above-ground tank?
Pumping to a water tank is in my medium-term plans. Once I have a thousand gallons or two up in the hills behind the house, I'll do gravity flow water, and finally get running water here.
More immediately I am still working on early stages of my "cold battery" concept; eg finding a chest freezer that won't overload my power system on startup. And deciding what voltages to configure my old Xantrex PWM (converted to a load controller) to divert power to it at.