Backgrounds: Until now, diarrhea remains a public health problem in Indonesia, this could be seen with high morbidity rate. Puskesmas Tambakrejo is a public health center in Surabaya city with a high diarrhea cases. Futhermore, the diarrhea cases among infants ranked second and for all ages is ranked fourth in Surabaya. Methods: Therefore, research aimed to evaluate the diarrhea surveillance sy…