bob haller wrote, on Sat, 12 Jul 2014 09:38:37 -0700:

note after some research the $100,000 for a 1000 foot
is at the very top of the cost of a water well...
Around here its closer to 10 bucks a foot

This is California, Silicon Valley, one of the most expensive
places in the country, where I was quoted $4,200 just to fill
my pool with water.

My neighbors, who drilled a 520 foot well, said it cost them over
fifty thousand dollars, so, that's about $100 a foot.

They had initially hit water at 300 feet, but at 520 feet,
they're getting 18 gallons a minute, and the code is that they
must also have 15,000 gallons of tank, where the rules are such
that each tank will be 5,000 gallons (because of platform
requirements if it's over 5,000 gallons).

10,000 gallons must be reserved for fire suppression alone, so
only 5,000 gallons is for the homeowner.