Hardness of drinking water in Liaoyang area

Hello, would you like to ask the hardness of drinking water in Liaoyang area? The hardness of drinking water in Liaoyang area is 8 degrees, and the safety information at the drinking water end of Liaoyang Health Service Center shows that the hardness of drinking water in Liaoyang area is 8 degrees, and each liter of water contains 80 mg of calcium oxide. Liaoyang, located in the middle of Liaoning Province, China, is rich in natural resources and tourism resources.