GB5749-2022

Standards for drinking water quality

生活饮用水卫生标准

GB 5749-2022 é uma norma nacional chinesa obrigatória vigente: Standards for drinking water quality. Setor: Alimentos. Foco: Segurança de produtos. Entrada em vigor: 1 de abr. de 2023.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard is mandatory and applies to all types of drinking water in China, including centralized water supply, small centralized water supply, decentralized water supply, finished water, and tap water. It establishes the hygienic requirements for water quality, water sources, water supply units, secondary water supply, and products related to drinking water safety. It is essential for municipal water treatment facilities, water purification equipment manufacturers, and chemical treatment agent suppliers entering the Chinese market.

Requisitos técnicos

The standard categorizes water quality indicators into regular indices (43 items) and expanded indices (54 items). It mandates that drinking water must not contain pathogenic microorganisms, chemical or radioactive substances that endanger human health, and must have good sensory properties. Manufacturers and suppliers must ensure their treatment chemicals and equipment do not contaminate the water supply. It specifies strict hygienic requirements for chemical treatment agents (e.g., coagulants, disinfectants) used in the water treatment process, which must comply with GB/T 17218-1998. Additionally, water transmission and distribution equipment, as well as protective materials, must meet the safety regulations outlined in GB/T 17219-1998. The standard also defines source water quality requirements, requiring surface water to comply with GB 3838 and groundwater to meet GB/T 14848-2017. If source water does not meet these standards, advanced purification processes must be implemented to ensure the final water quality complies with this standard.

Métodos de ensaio

Testing methods are primarily governed by the GB/T 5750 series. The standard outlines basic principles and requirements for water quality inspection, sample collection, preservation, and analytical quality control. Engineers must refer to the specific testing procedures in GB/T 5750.4 through GB/T 5750.13 to verify compliance with the regular and expanded indices.

Perguntas frequentes

What products and facilities are regulated under GB 5749-2022?

It applies to all types of drinking water in China, including centralized water supply, small centralized water supply, decentralized water supply, finished water, and tap water. It regulates water quality, source water, and related products.

What are the main updates in GB 5749-2022 compared to the 2006 version?

The 2022 version adjusted the water quality indices from 106 to 97 items, adding new indicators like perchlorate and 2-Methylisoborneol, while deleting 13 outdated indicators. It also updated limit values for several substances like nitrate and turbidity.

How does GB 5749-2022 relate to international standards?

The standard references domestic norms such as GB 3838 for surface water and GB/T 14848 for groundwater. While it shares similarities with WHO guidelines, it incorporates specific localized parameters and testing methods tailored to China's water quality conditions.

The summary above provides a high-level overview of GB 5749-2022. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5749-2022 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Saúde e higiene
CCS: C51
ICS: 13.060
Órgão competente: National Disease Control and Prevention Administration
Comitê técnico: National Disease Control and Prevention Administration

Relações

Substitui:GB 5749-2006