1. Introduction: A Threat to Quality and Compliance Heavy metals are more than just a problem for water users in the residential, industrial, and commercial sectors. Heavy metals in drinking water are a major concern due to their harmful effects on human health. Unlike many other pollutants, heavy metals do not break down in the environment and can accumulate in the body over time, causing a number of serious illnesses. In the industrial and commercial sectors, the presence of heavy metals in water sources poses a serious threat to product quality, equipment safety, and regulatory compliance. When the concentrations of these metals are high, a standard reverse osmosis system alone is often insufficient. Heavy metals are naturally occurring in the earth and can easily leach into groundwater. Furthermore, human activities, including industrial and agricultural activities and the resulting waste, have contributed to increased heavy metal concentrations in various water sources. As a...