NOVELTY - An on site bioremediation system (I), comprising a single chambered culture vessel, nutrient media, stock microorganism containers, and an external controller which comprises a computer programmed to control (I), is new. (I) provides active, logarithmically growing microorganisms continuously, to external biodegradable waste.    USE - (I) in which microorganisms are cultured continuously under optimum conditions to obtain active, logarithmically growing microorganisms, is used for metabolizing biodegradable waste such as sewage, waste water, grease, fats, petroleum waste products or by-products, or garbage at biodegradable waste site external to it. The method involves adding nutrient media and stock microorganism to the culture vessel periodically or continuously during culturing to obtain active logarithmically growing microorganism continuously, and continuously applying the active, logarithmically growing microorganism from the culture vessel output unit to the biodegradable waste at a site external to the system to metabolize the waste. The method further involves adding water to the culture vessel to a predetermined level and heating it to a predetermined temperature which is then followed by addition of nutrient media and stock microorganism to the heated water prior to the culturing of stock microorganisms. The step of continuous application of microorganism to the waste, involves adding water to the culture vessel until the active logarithmically growing microorganism flow from the culture vessel through the culture vessel output unit into the biodegradable waste. The flow of microorganisms from the culture vessel occurs at the same rate as the rate of addition of water to the culture vessel (claimed).    ADVANTAGE - The microbial cultures survive in high numbers and actively metabolize the waste because continuous addition of new stock or original selected microorganisms along with fresh nutrient media into the culture vessel is carried out. By the continuous addition of stock microorganism to the culture vessel, mutations to the culture of microorganisms that could have resulted in changed properties can be minimized. The system is versatile and can be tailored to treat a specific waste by simply selecting the appropriate microorganism.    DETAILED DESCRIPTION - An on site bioremediation system (I), comprising a single chambered culture vessel, nutrient media, stock microorganism containers, and an external controller which comprises a computer programmed to control (I), is new. (I) provides active, logarithmically growing microorganisms continuously, to external biodegradable waste. The single chambered culture vessel that is not connected to another culture vessel comprises water, microorganism and nutrient input units, output unit for output of logarithmically growing microorganisms and a removable, sealable lid within an air bleed valve. The nutrient and the stock microorganism containers are located external to the culture vessel and are connected to the nutrient input unit and microorganism input unit, respectively.    DESCRIPTION OF DRAWING(S) - The figure shows the perspective view of a bioremediation system.    Bioremediation system (10)    Controller (12)    Culture vessel (14)    Nutrient/microorganism pump (15,18)    Nutrient containing box (20)    Microorganism containing box (22).