Drilling may not start until permits are obtained, usually a period requiring two to four weeks. The actual drilling often takes only one day due to the efficiency of our equipment and crew. The pump and well tank installation typically requires an additional day. However, the trench for the water and electric lines between the well and dwelling frequently must remain open until inspection and approval by the local health officer. Upon installation, the water should be run continuously for approximately five days or until the water is crystal clear and the chlorine disinfectant has been pumped out.