Diarrhoea among children under 5years is a central public health issue worldwide.5 It causes more than 1.7billion cases and kills 525 000 children under 5years old each year, making it the world’s second leading cause of mortality among children under 5years. 6 Globally, diarrhoeal disease accounts for 15% of all causes of child mortality that occur each day.7 8 Despite simple and effective treatments available, more than 2195 children die from diarrhoea daily.7 In addition, children under 5years get diarrhoea sickness on average three times each year in low-income and middle-income nations.9 Furthermore, diarrhoea causes more than 90% of deaths in children under 5years old in low-income and lower middle-income countries.10 Similarly, more than 88% of all child deaths under the age of 5 years in sub-Saharan African and South Asian nations are attributable to diarrhoea.10 In particular, infants exposed to contaminated environments and weakened inborn immunity are more likely to die from diarrhoea in the second half of their life.11 Evidence revealed that African children under 5years have at least five episodes of diarrhoea yearly, and about 800000 die from it.12 Similarly, diarrhoeal disease is the most significant public health issue in sub-Saharan African nations. It is responsible for 80% of child fatalities and more than 50% of paediatric illnesses.13 Ethiopia is one of the subSaharan nations with the highest prevalence of diarrhoeal morbidity and mortality rate.14 According to the Ethiopian Demographic Health Survey (EDHS) 2016 report, 1 in every 15 children die before turning 5years old in Ethiopia, and 12% of children under 5years had diarrhoeal episodes in the 2weeks before the survey.15 Each year, diarrhoeal disease kills half a million Ethiopian children under 5years, accounting for 23% of Ethiopia’s child mortality causes.15–17 Infectious diseases linked with poor water, sanitation and hygiene (WASH) have been a substantial public health concern and have a negative impact on children’s health.18 The most common of these is diarrhoeal illness.19 However, diarrhoeal disease can be treated and prevented using easy and inexpensive measures.20 Using safely managed drinking water, sanitation and hygiene services may be the best interventions to avoid diarrhoeal infection. Additionally, requiring health services to offer WASH services to all children is essential to reduce diarrhoeal disease, in saving many children lives.21 By 2030, the Sustainable Development Goal (SDG) 3 seeks to end the death of infants and children under 5years old from preventable diseases, including diarrhoea. To do this, the SDGs call for the WHO and UNICEF Joint Monitoring Program (JMP) to set up the JMP ladders for WASH...