Deep Well Drilling (Basic) Cunstruction

Well construction diagram

Deep Wells


Here in Brevard County, FL we are very fortunate to have an abundant water source located in the Floridan Aquifer. A water well contractor will drill on average  between 280' and 330' below the ground surface. The main focus of the well construction is that the casing must be imbedded into the clay bed ( consolidated formation) , so in order for the sands above will not enter the well. When the driller has the casing installed, the deep well drilling is continued and  drilled out. The water well driller will eventually penetrated and drilled into the limestone on average 60 feet into the aquifer to ensure volume with out sacrificing water quality. When drilling in the limestone, air is used to open up a pocket and clean out any loose limestone from the bottom of well.  When the well is completed a gas pump is connected to the well and pumped out for 1-3 hours developing the well making sure any loose limestone is out of the well and is pumping clear at a pump rate of 60 gallons per minute. Black steel casing is the industry standards for deep well for its longevity and tensile strength. The average life of the well casing is 25 years. You can prolong the life of a well by weatherizing it and lining the well. visit

Why do you use Black Steel Casing and not galvanize casing for deep wells?

Deep wells in Brevard and Indian River counties contain sulfur in the the water as well as some shallow wells. Sulfur has a bad reaction to to galvanize. Galvanize casing when used for deep wells  have an average life of 9-12 years. The issue with galvanize and deep wells is the sulfur/hydrogen-sulfide  in the deep well water. According to the U.S. General Service Administration, " may be corroded by: Acids, strong alkalis, and is particularly vulnerable to corrosion by sulfur acids produced by hydrogen sulfide and sulfur dioxide pollution in urban atmospheres."