In fact, industrial reverse osmosis systems range from 800 GPD to 400,000 GPD for different applications. Their small units, from 800 to 10,000 GPD, could suit applications at the small-scale level in both industries and laboratories, respectively. This would ensure compact, effective water purification is availed. Mid-size systems from 10,000-100,000 GPD offer larger facilities to accommodate such industries as food processing plants and textile manufacturing. Large-scale systems [100,000-400,000 GPD] are designed for significant operations like power plants and municipal water treatment. Brackish Water Treatment: Seawater Treatment can be effectively scaled up to meet high demands of water.