Another benefit in having a stock pond if possible... no water well... I had my water tested,,, high only in magnesium and iron, everything else fine... sooo I will be pumping and treating this water into a tank and that will be better than the water out of your faucet.... as long as you control all of the watershed feeding the surface runoff to the pond, you are in great shape.
My 650,000 gallon pond's surface runoff is a 30 acre area, all within my property. The surface runoff of this area into my pond is about 100,000 gallons per 1" of rainfall. Essentially just a big rainfall collection system and no chemicals will ever runoff into the pond from adjacent properties, because the watershed is all within my property..
A 400 ft well drilled and packed (no pump or pressure tank) would have cost me $16K. This water is just sitting there in place waiting to be pumped, filtered and treated. I am a zealot when it comes to ponds. If you have standing surface water, you can do anything!
My larger pond will be for catfish only
PS.. AD we are doing a solar powered aerator.... Have everything except the 12vdc/120vac inverter. using a hiblow HB 120LL air pump. Great pumps used normally for aerobic septic systems but works fantastic for ponds.....