A 400 foot well? That'd be what, 15, 20 grand, including the casing to prevent contamination? I can see that being a smart move for the dairy farm to offer to neighbors, but that's a ton of money to do on your own initiative unless you're mortgaging new construction. (Better than drinking contaminated water, but still...)
That's pretty great pricing, though to add in protective piping to avoid contamination from shallower waters is an added cost. Almost built a house about 2 miles from an old garbage dump site, and the estimate for a shallower well than that was around $12k
