A thermoplastic composition comprises, based on the total weight of the composition: 51-90 wt % polyester, 10-49 wt % ABS impact modifier; 0-20 wt % of multifunctional epoxy compound; 0-40 wt % filler; 0-2 wt % fibrillated fluoropolymer; and more than 0 to 5 wt % of a stabilizer composition. The water after such first treatment is run through a separation means and then through a rotating filter, and then subjected to capacitive deionization, to yield clean water, which is then treated further to adjust he sodium content to render the water suitable for domestic and agricultural purposes. The several embodiments of the invention provide for formation of gate electrode structures with recessed and partially recessed spacers. The gates are formed in the recess parts in which the gate insulation layer is double layered in the bulbous profile areas and is single layered in the flattened profile areas.