off grid world

[crashdown]

You can have a pre-existing well, or a "household use only" (read: can't irrigate, water your yard, or provide for livestock) well on less than 35 acres, but last time I checked state law (I actually found the law online one time) it stated 35 acres or more to drill a new well. For me, I'd want to be able to irrigate, water my yard, and provide at least my dogs and/or livestock, so a limited well wouldn't do.

Another option is "non-exempt" wells. A lot wells that were dug before a certain time allowed outside use. I think it was 1978 or 1979. It doesn't mean all of them older than that will let you though. A neighbor of mine has less than one acre, but the original well on his property allowed for outside use, and when he got his new well dug, the non-exempt status carried over and he can do whatever he wants.
There are tons of lots smaller than 35 acres for sale that allow you to build and dig a well. The only issue you might have is that on smaller lots (sub one acre) you might not be able to get a permit for a septic system. I have seen little half acre lots where people couldn't put in a septic system because the lot is so small they couldn't get the leach field far away enough from the well or a neighbors well to get permitted.