Dead-end ultrafiltration was added to traditional drinking water treatment to improve arsenic removal. The study looked at different levels of turbidity and arsenic, as well as the impact of iron and manganese. The results showed that conventional methods struggle to meet safety levels for arsenic and manganese, but ultrafiltration was highly effective (arsenic: 96.9%, manganese: 88.9%, iron: 99.7%). Ultrafiltration also remained stable over time. The study found that ultrafiltration is more cost-effective in larger treatment plants, with lower operating costs as treatment capacity increases. Overall, ultrafiltration can be a valuable addition to drinking water treatment plants facing higher levels of arsenic and other contaminants.