GB 50015-2019 第3.9.1条
| The water quality of water features shall comply with the requirements of the current national standard "The Reuse of Urban Recycling Water—Water Quality Standard for Scenic Environment Use" GB/T 18921. When a non-circulating water supply system is adopted, the water source quality shall comply with the requirements of the current national standard "Standards for Drinking Water Quality" GB 5749.