Antiscalants are chemicals used in water treatment to prevent the formation of scale in water systems. Scale typically consists of mineral deposits, primarily calcium carbonate, calcium sulfate, and other minerals, which can accumulate and cause problems in equipment and pipes. Antiscalants work by inhibiting the precipitation and growth of these mineral deposits. The selection of an antiscalant depends on the specific water treatment application, the composition of the source water, and the type of scale that needs to be controlled. Proper dosing and control are essential to ensure that the antiscalant effectively inhibits scale formation without causing other water quality issues. Antiscalants are a critical component in preventing the costly problems associated with scale buildup in water systems.