“…On the other hand, in Central Indonesia, East Nusa Tenggara had the highest WASH research with 15 articles, and in Eastern Indonesia, Papua province had the highest WASH research, i.e., 7 articles. Provinces with a small number of WASH research in Indonesia were South Kalimantan, with three articles, e.g., [25], and West Kalimantan, i.e., 3 articles, e.g., [26], and Gorontalo, i.e., 2 articles, e.g., [27]. Provinces with only one article were Bangka Belitung [28], East Kalimantan [29], Riau [30], Riau Archipelago [31], Central Kalimantan [25], Southeast Sulawesi [32], North Sulawesi [33], and Maluku [34].…”