Etidronic acid solution is widely used as a scale and corrosion inhibitor in water treatment systems. It effectively prevents the formation of calcium carbonate, calcium sulfate, and other mineral scales in boilers, cooling towers, and reverse osmosis systems. Its chelating properties help stabilize metal ions, reducing corrosion in pipelines and equipment. Additionally, it is utilized in detergents and cleaning agents to enhance performance by softening water and preventing redeposition of minerals on surfaces. In the oil and gas industry, it is employed in drilling fluids to control scaling and improve operational efficiency. Its application also extends to the textile industry, where it aids in dyeing processes by maintaining water quality.