Simplified Dynamic Reverse Osmosis Design to Achieve High Recovery in a Small Footprint

Systems and methods for configuring compact desalination RO systems operable for point-of-use applications are disclosed herein. The compact RO system can include a single RO element disposed in a vessel and connected to one or more pumps in a circulation loop that recirculates fluid through the vessel. The compact RO system can reconfigure, combine and/or eliminate one or more components to reduce a footprint of the system. For example, the RO system can utilize pumps having flow valves integrated therein instead of separate pump and valve components. High recovery ratios can be maintained by allowing brine produced by the RO element to exit the system before passing through the pump. In some embodiments, the system can utilize pulse width modulation (PWM) to change a flow rate of the pump within the system to ensure operation at peak pressure and flow rate.