A Technical Note: Causes of Corrosion in Deep Well Water Pumps in Israel^*

Among the causes of corrosion of deep well water pumps in Israel are galvanic currents caused by temperature differential cells between the upper and lower portions of well liners and pump components; galvanic corrosion from incompatible metals; and discharges of current from interconnected piping systems. These currents were held responsible for damage to screens and to pump components, especially driving shafts, which in some cases was so serious as to cause abandonment.