Earth Membrane for clean drinking water can be used for multiple water purifiers. This has been built to match any household RO water purifier system fitting. This membranes can work under low pressure to reach as high permeate flow and salt rejection as regular low pressure composite membrane, and achieves a salt rejection rate which can decrease the investment costs for such relevant facilities as pump, piping, and container etc, and operating cost for the RO system, thus increasing the economic efficiency. It removes impurities from the water making water safe with dissolved oxygen and odorless for drinking. It is ideally used for domestic household, commercial, laboratory, hospitals and all other RO systems.