It is amazing how lousy the water quality is in heavily populated areas and how expensive drilling a well in the country areas is.For years in Northern Maine, $2600 would get you a drilled well with lots of water and a submersible pump to boot. Now the figure is closer to $4800 from my experience. But regardless of the current price tag, our wells are not 700 feet deep, water is plentiful. Less demand or population. Less "straws" down into the ground aquifier and lots of supply according to the state of Maine concerning wells. A well that is 60 feet and not over 250 feet is common.
I have a brother who lives in Boxford MA who I believe has a 700 foot plus well and without hurting his feelings, even with tons of filters, softeners, the water quality is poor, the quantity is nothing to write home about. Anyone should have clean water, lots of it and not worry about running out or getting sick. Some northern Maine water wells are fourteen feet deep, with washed crushed rock on the bottom and concrete 3-4 foot tiles stacked and covered. I would not want to be trying to water forty thirsty head of cattle or horses with this type of well but they do the trick for single family homes if the teenage showers and wash loads are kept in check.