Stunting in the working area of the Jelbuk Public Health Center Jember Regency is high. In addition, the working area of the Jelbuk Public Health Center is also in the second worst position in terms of access to sanitation facilities. This study aims to determine the relationship between water, sanitation, and hygiene (WASH) with stunting in toddlers aged 24-59 months in the working area of Jelbuk Public Health Center. The research was conducted from October 2021 to August 2022 using an observational analytic method with a case-control. The sample is 98 respondents consisting of 49 case samples and 49 control samples. The sampling technique used is simple random sampling. They collected data using interviews, documentation studies, and observation. Data analysis used univariate and bivariate analysis. The results showed that the variables that were related were sources of drinking water (p-value= 0,012 OR = 3,212 95% CI = 1,361-7,581), latrine access (p-value= 0,039 OR = 2,604 95% CI = 1,129-6,004), waste disposal (p-value= 0,009 OR=7,622 95% CI=1,605-36,186), sewerage (p-value=0,002 OR=4,111 95% CI=1,735-9,740), and mother's hand washing habits (p-value= 0,000 OR = 6,923 95% CI = 2,852-16,804), while drinking water treatment is not related (p-value= 0,068). The community is expected to be able to further improve the behavior of consuming protected drinking water sources by always cooking from the water they consume so that the potential for contamination can be minimized, carrying out proper waste disposal, and improving the habit of washing mother's hands using soap and running water at the recommended time.
