Indonesia is in third place as a country that produces the largest plastic waste in the world as much as 67.8 million tons or there are 185,753 tons of waste produced by 270 million people every day. In the province of aceh the amount of waste generated  per day is 197.8 tons/day with a population of 265,111. Purpose  This study is to analyze the behavior of the residents of Ujung Tanjung in the disposal of household liquid waste at Tanjung Tanjung, Meureubo District, West Aceh Regency. The results of the study concluded that the occurrence of water in the village of Ujung Tanjung is caused by agricultural activities of the residents of Ujung Tanjung who dump waste pesticide into the ground so that groundwater is contaminated. Disposal of domestic waste is disposed of into a ditch which is less than 10 meters from a clean water source. As for the disposal of feces, some residents do not have a septic tank to collect feces, but the sewage pipe is channeled into the river in the village of Ujung Tanjung.