An apparatus for removing contaminants from water, comprising in combination: a container for holding the water; at least one disk-shaped planar electrode capable of being rotated about an axis; a spindle having an axis collinear with the axis of each of said at least one rotatable electrodes, said at least one rotatable electrode being attached to said spindle; at least one planar stationary electrode having a first opening therein effective for permitting said spindle to pass therethrough disposed in the proximity of and parallel to the plane of said at least one rotatable electrode, and forming a volume therebetween, said at least one rotatable electrode and said at least one stationary electrode being disposed in said water when water is held in the container; a source of electrical current in electrical contact with said at least one stationary electrode (24a, 24b) and said at least one rotatable electrode effective for causing electrocoagulation of the contaminants in said water; and means for rotating said spindle about the axis thereof at a chosen angular velocity, wherein the container, the at least one rotatable electrode and the at least one stationary electrode are configured such that when said spindle is rotated with the chosen angular velocity, said contaminated water is caused to pass through the volume in such a manner that the at least one rotating electrode and the at least one stationary electrode function as a fluid pump whereby fluid is caused to enter at the first opening and is directed toward the periphery of the at least one rotating electrode where the fluid departs the outer periphery of the disk-shaped electrode and is recirculated back to the first opening where it again enters the volume. a container for holding the water; at least one disk-shaped planar electrode capable of being rotated about an axis; a spindle having an axis collinear with the axis of each of said at least one rotatable electrodes, said at least one rotatable electrode being attached to said spindle; at least one planar stationary electrode having a first opening therein effective for permitting said spindle to pass therethrough disposed in the proximity of and parallel to the plane of said at least one rotatable electrode, and forming a volume therebetween, said at least one rotatable electrode and said at least one stationary electrode being disposed in said water when water is held in the container; a source of electrical current in electrical contact with said at least one stationary electrode (24a, 24b) and said at least one rotatable electrode effective for causing electrocoagulation of the contaminants in said water; and means for rotating said spindle about the axis thereof at a chosen angular velocity, wherein the container, the at least one rotatable electrode and the at least one stationary electrode are configured such that when said spindle is rotated with the chosen angular velocity, said contaminated water is caused to pass through the volume in such a manner that the at least one rotating electrode and the at least one stationary electrode function as a fluid pump whereby fluid is caused to enter at the first opening and is directed toward the periphery of the at least one rotating electrode where the fluid departs the outer periphery of the disk-shaped electrode and is recirculated back to the first opening where it again enters the volume.