This water needs zero treatment. PM me for #'s.My storage tank is +/- 16,000 gallons. You can hear it overflowing from 1/2 mile away.500gpm? thats badass.
i worked on a waterplant for a giant school complex that was like 50-100 acres... all irrigated, w/ fire supression etc etc. that was only 200gpm from a 6" well.
you should buy a 100,000 ground storage tank... treat that water and sell it imo. mad moneys.
I actually have permits to distribute (commercial export) The Chinese are buying them as fast as they can. I'll watch it flow down to the lake like it has forever. Piss on 'em.