An electrocoagulation wastewater treatment apparatus is disclosed wherein a primary electrocoagulation reactor chamber houses treatment electrodes having front and rear faces. Electrode positioners are located in the reactor chamber for holding the treatment electrodes, each of the electrode positioners having a feed core connectable with a high pressure source of fluid. A plurality of passages extend from the feed cores, the passages located so that jets of fluid are directed at both the front and rear faces of each of the electrodes held by the positioners.