An electrochemical device having ten compartments (36, 34, 70, 72, 34, 36, 34, 70, 72, 34) between electrode compartments (38, 40), the electrochemical device comprising: an ion-trapping compartment comprising electroactive media consisting of cation-exchange resin, the compartment being bounded by a first anion-selective membrane and a second anion-selective membrane; an alkaline-collecting compartment positioned adjacent the ion-trapping compartment, the alkaline-collecting compartment defined by a first cation-selective membrane and the first anion-selective membrane, and the alkaline-collecting compartment comprising a first mixture of cation exchange resin and anion exchange resin: a first depleting compartment disposed adjacent the alkaline-collecting compartment, the first depleting compartment defined by the first cation-selective membrane and a third anion-selective membrane; a concentrating compartment disposed adjacent the first depleting compartment, the concentrating compartment defined by the third anion-selective membrane and a second cation-selective membrane; wherein the concentrating compartment is adjacent to an anode compartment; wherein fluid from the ion-trapping collecting compartment is introducible into an cathode compartment; a second depleting compartment disposed on the other side if the ion trapping compartment and positioned between the ion trapping compartment and the cathode compartment, the second depleting compartment adjacent the alkaline-collecting compartment; the second depleting compartment being defined by the second anion-selective membrane and a third cation-selective membrane; wherein the remaining compartments (36, 34, 70, 72, 34) of the electrodeionization device comprised of depleting compartments, concentrating compartments and compartments (70, 72) are in the similar order as the compartments (36, 34, 70, 72, 34) described; wherein the first depleting compartment comprises a second mixture of cation exchange resin and anion exchange resin; wherein the concentrating compartment comprises a mixture of cation exchange resin and anion exchange resin with about 60% anion exchange resin; similar in composition as the mixture in the first depleting compartment; and wherein the second depleting compartment comprises a mixture of cation exchange resin and anion exchange resin similar in composition as the mixture in the first depleting compartment; wherein the first mixture of the ion exchange resins (50, 52) in the alkaline-collecting compartment has similar concentrations as the resins in the depleting compartments and the concentrating compartments. an ion-trapping compartment comprising electroactive media consisting of cation-exchange resin, the compartment being bounded by a first anion-selective membrane and a second anion-selective membrane; an alkaline-collecting compartment positioned adjacent the ion-trapping compartment, the alkaline-collecting compartment defined by a first cation-selective membrane and the first anion-selective membrane, and the alkaline-collecting compartment comprising a first mixture of cation exchange resin and anion exchange resin: a first depleting compartment disposed adjacent the alkaline-collecting compartment, the first depleting compartment defined by the first cation-selective membrane and a third anion-selective membrane; a concentrating compartment disposed adjacent the first depleting compartment, the concentrating compartment defined by the third anion-selective membrane and a second cation-selective membrane; a first depleting compartment disposed adjacent the alkaline-collecting compartment, the first depleting compartment defined by the first cation-selective membrane and a third anion-selective membrane; a concentrating compartment disposed adjacent the first depleting compartment, the concentrating compartment defined by the third anion-selective membrane and a second cation-selective membrane;