GB/T 18920-2020 (English Version)

Scope: This standard specifies the terms and definitions, water quality indicators, sampling and monitoring, and safe utilization of urban miscellaneous water for urban sewage recycling. This standard is applicable to reclaimed water for miscellaneous purposes such as toilet flushing, vehicle flushing, urban greening, road cleaning, fire protection, and building construction.

GB/T 18920-2020 Referenced Document

GB 50084 Code for design of sprinkler systems
GB/T 11913 Water quality--Determination of dissolved oxygen--Electrochemical probe method
GB/T 12997 Water quility--Technical regulation on the design of sampling programmes
GB/T 12998 Water quality--Guidance on sampling techniques
GB/T 12999 Water quality sampling--Technical regulation of the preservation and handling of samples
GB/T 5750.11 Standard Examination Methods for Drinking Water Part 11: Disinfectant Index*， 2023-03-17 Update
GB/T 5750.12 Standard Examination Methods for Drinking Water Part 12: Microbial Indicators*， 2023-03-17 Update
GB/T 5750.4 Standard Examination Methods for Drinking Water Part 4: Sensory Properties and Physical Indexes*， 2023-03-17 Update
GB/T 5750.5 Standard Examination Methods for Drinking Water Part 5: Inorganic Non-metallic Indicators*， 2023-03-17 Update
GB/T 5750.6 Standard Examination Methods for Drinking Water Part 6: Metal and Metalloid Indicators*， 2023-03-17 Update
GB/T 7488 Water quality--Determination of biochemical oxygen demand after 5 days(BOD5)--Dilution and seeding method
GB/T 7489 Water quality--Determination of dissolved oxygen--Iodometric method
HJ 506 Water quality.Determination of dissolved oxygen.Electrochemical probe method
JGJ 63 Standard of water for concrete

2020 GB/T 18920-2020 The reuse of urban recycling water—Water quality standard for urban miscellaneous use
2002 GB/T 18920-2002 The reuse of urban recycling water--Water quality standard for urban miscellaneous water consumption