“…A total of 40 included studies explored the association between childhood stunting and improved water sources ( 15 , 21 , 28–30 , 33 , 37 , 39–41 , 43 , 46–51 , 54 , 55 , 58 , 59 , 62 , 66 , 68–70 , 74 , 76 , 77 , 79 , 83 , 87 , 89 , 90 , 93 , 96 , 98 , 99 , 101 , 102 ). These studies used a variety of methods and examined associations with several indicators measuring access to clean water, including presence of improved sources, unimproved sources, and physical distance to water sources.…”