Abstract Sulphur is a non-metallic chemical element and most public water supplies contain sulfate concentrations of less than 500 mg/L. Sulfuric acid is corrosive and toxic by ingestion, inhalation or contact with skin and eyes. Animals were divided into six groups exposed to zero, 30, 50, 70, 100 and 140 ml / 100 L water of sulfuric acid for 32 days, the study concluded that the increase of sulfuric acid concentration in the water have a clear indication of the negative impact on the metabolism in fish and on various vital elements of the fish's body, under study, and these effects depends on the concentration and duration of exposure.