Welcome.
A few thoughts: First, just because you have to have a well does not mean you have to plumb or use it. You can still build to your plans and have a water tank system. Just tell the driller to cap the well. Although it is really advisable to have a water source if you plan to keep animals.
Second, talk to your lender and ask them if the well needs to be 'active' (pump down hole, wired to electricity, plumbed to the house.) Explain your desire. Mostly the lender does not care what you use for water. They just want to ensure their investment has re-sale value if the loan is not collected. It is hard to re-sell a property without a water source and the bank is not in the land development/project business. However, if a well is on site and can be hooked up, that may be all that matters to them to qualify.
Lastly, look at "green building" lenders. There are precious few whom work with non traditional loans, but they are out there. I think Green Mountain out of Colorado is still around, but it has been years since I looked at that area of finance.
Good luck with your
project!