A case series of four children, of different age groups, having complaints of polyuria and failure to thrive.These cases include two infants, a toddler and a child and investigations revealed that they had hyponatremia,hypokalemia, hyperchloremia and metabolic alkalosis, leading to a diagnosis of Bartters syndrome. Two ofthe patients also had hypomagnesemia. All the children were put on treatment for Bartter’s Syndrome, andthey responded well but unfortunately one of them was lost to follow-up.