T The Kato Katz technique which is recommended by the WHO in the examination of worm still has its drawbacks, namely the lack of accuracy in calculating the number of worm eggs during a particular examination. So the researchers intend to find out whether certain variations and time intervals relate to assessing the number of Egg Per Gram eggs in the Kato Katz technique. The study used a descriptive observational method with a cross-cutting design involving 82 students of Kalibaru 07 Elementary School. Data were collected by conducting stool examination using Kato Katz technique and filling out questionnaires for behavioral data, water sources and latrine conditions. Data analysis using SPSS for Windows 17.0 with a significance level of 0.05. There were 32 people (39%) positive for helminthiasis in students of SDN 07 Kalibaru. Chi-square test analysis shows that there is a relationship between behavioral risk factors, water sources and latrine conditions with the incidence of helminthiasis (p <0.05). It can be concluded that there are differences in the calculation between the time interval and the decrease in the number of worm eggs. There is a relationship between behavioral risk factors, water sources and latrine conditions with the incidence of helminthiasis.