Abstract: A portable water treatment system comprising a water processing unit that automatically determines whether the system is connected to a pressurized water source or not. If an unpressurized source is detected, the system activates a pump to ensure that the water flows through the system at a pressure level to remove particulates and ensure the ultraviolet (UV) light is effective at neutralizing viruses and bacteria. If the water source is pressurized, the pump is deactivated and the water flows through the system under the pressure of the pressurized source. The system uses a failsafe mechanism to 1) ensure that water cannot flow through the water treatment unit if the UV light chamber is not powered and 2) ensure the user can know that the UV light is in fact functioning through the use of an indicator.