Plasma with various reactor geometries has been studied for wastewater treatment applications. This researchaimstostudy the effect of underwater plasma jet treatment on water contaminated by potentially toxic metals were used. Thecontaminated samples were processed under plasma jet treatment then the final concentration after this processwasdetermined to get the whole rate of the treatment. It was found that underwater plasma jet is an effective methodtoeliminate the metal contaminates. The use of non-thermal plasma jet technology for the removal of potentiallytoxicmetals can have a positive impact on water quality, particularly in areas where heavy metal contamination is a concern. The removal of potentially toxic metals can improve the safety and taste of drinking water, as well as reduce theriskofenvironmental contamination from industrial wastewater or groundwater remediation.