Three kinds of water. Lake water quality indicators are divided into: Class I water: less than or equal to 200 liters, Class II water: more than or equal to 200 liters and less than 2000 liters, and Class III water: more than 2000 liters. Runze Lake Park is located in Xinji, Shijiazhuang, with an area of about 230,000 square meters, belonging to the third class of water. Three types of water quality: suitable for centralized drinking water source secondary protection areas, general fish protection areas and swimming areas.