T/BJWA 001-2021 Healthy Direct Drinking Water Quality Standards

Scope

Scope: This document specifies the terminology definitions, water source requirements, water quality standards, and labeling for healthy direct drinking water. This document applies to water that meets the standards for drinking water quality and is treated from tap water or source water, and is suitable for direct consumption by users. Main technical content: This document amends and adjusts relevant indicators on the basis of meeting the stricter requirements of GB 5749 "Hygienic Standards for Drinking Water" and CJ 94 "Water Quality Standards for Drinking Water". - Three key indicator limits are set: total dissolved solids, total hardness, and total organic carbon (TOC), which also meet the limit requirements of GB 5749 "Hygienic Standards for Drinking Water". - Three microbiological indicators are added: faecal streptococcus, Pseudomonas aeruginosa, and Clostridium perfringens. - 19 limit indicators are adjusted. The limit indicators in this document are stricter than those in GB 5749 "Hygienic Standards for Drinking Water" and CJ 94 "Water Quality Standards for Drinking Water". The main changes are as follows: - Aluminum is reduced from 0.2 mg/L to 0.1 mg/L; - Lead is reduced from 0.01 mg/L to 0.005 mg/L; - Arsenic is reduced from 0.01 mg/L to 0.005 mg/L; - Mercury is reduced from 0.001 mg/L to 0.0001 mg/L; - Cadmium is reduced from 0.003 mg/L to 0.001 mg/L; - Nickel is reduced from 0.02 mg/L to 0.008 mg/L; - Total chromium is increased to 0.05 mg/L; - Cyanide is reduced from 0.05 mg/L to 0.01 mg/L; - Nitrite is reduced from 1 mg/L to 0.1 mg/L; - Formaldehyde is reduced from 0.9 mg/L to 0.06 mg/L; - Toluene is reduced from 0.7 mg/L to 0.1 mg/L; - Tetrachloromethane is reduced from 0.002 mg/L to 0.001 mg/L; - Trichloroethylene is reduced from 0.07 mg/L to 0.0025 mg/L; - 1,2-Dichloroethylene is reduced from 0.05 mg/L to 0.025 mg/L; - Residual chlorine is ≤0.05 mg/L; - Anionic synthetic deterg

Development Information

Related Standards