Pesticides can improve the quality of agricultural products and provide food security, but they can also have negative effects on the ecosystem. In agriculture, forestry, health, and other industries, pesticides are an essential productivity tool for controlling pests. For the past few decades, pesticides have been utilized in agriculture to manage and eradicate agricultural pests as well as in the public health sector to combat disease vectors. However, during the past 10 years, India has seen a sharp increase in the number of pesticides used in agriculture, which has left the environment extremely polluted and seriously jeopardising human health. Malathion is an organophosphorus pesticide with moderate toxicity. It absorbs through the skin by inhalation and from the gastrointestinal tract. It acts, after metabolic conversation to the oxygen analogue, melaoxon, by cholinesterase inhibition. Continuing exposure may inhibit cholinesterase activity to hazard levels. This study demonstrated that the stability of malathion in water was investigated because it is an agricultural pesticide that may be harmful to the general public's health. A week's worth of malathion concentration was accumulated in water in just one week.