oceanicwater Store Our system offers five filtration stages, and includes a pump and tank for good water pressure and water on demand:A sediment WATERfilter to trap particles including rust and calcium carbonateA CTO CARBONWATERFILTER (CARBON BLOCK)An activated carbon WATERfilter to trap organic chemicals and chlorination GACA reverse osmosis (RO) filter with a thin film composite membrane (TFM or TFC) 75GPDA post RO carbon WATER filter to capture those chemicals not removed by the RO membrane. FOR TASTE & ODOR REMOVALcomes with Booster pump. Great for Home with less than 40psiWith 4.5 Gallon RO tankFaucet -RoAll tube and fittings for easy installation.