A LARGE PART OF THE WORLD'S POPULATION IS SUPPLIED WITH DRINKING WATER FROM SUBWAY SOURCES. DURING THE LAST FEW YEARS, GROUNDWATER NITRATE CONCENTRATIONS HAVE INCREASED CONSIDERABLY. THIS WORK PROPOSES THE REMOVAL OF NITRATES FROM BRACKISH GROUNDWATER AND A MODEL SOLUTION BY ELECTRODIALYSIS. TO EVALUATE THEIR EFFECT ON NITRATE REMOVAL AND ENERGY CONSUMPTION, THREE FACTORS WERE SELECTED WITH THREE LEVELS FOR EACH: NITRATE ION CONCENTRATION (50, 200 AND 500 MG/L), APPLIED ELECTRICAL POTENTIAL (5, 10 AND 15 V) AND FEED FLOW ARRANGEMENT (A, B AND C). THE RESULTS SHOWED THAT THE MOST INFLUENTIAL VARIABLE WAS THE ELECTRICAL POTENTIAL, THE INCREASE OF THE POTENTIAL (15 V) LED TO A CONSIDERABLE INCREASE IN NITRATE REMOVAL (92.5 %). THE BEST CONDITIONS FOR NITRATE REMOVAL FROM THE SYNTHETIC SOLUTION WERE AT AN ELECTRICAL POTENTIAL OF 15 VOLTS, INITIAL NITRATE CONCENTRATION 200 MG/L AND THE FLOW A...