GB5749-2022

Standards for drinking water quality

生活饮用水卫生标准

GB 5749-2022 es una norma nacional china obligatoria vigente: Standards for drinking water quality. Sector: Alimentos. Enfoque: Seguridad de productos. Entrada en vigor: 1 abr 2023.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

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 ensayo

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.

Preguntas frecuentes

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.

Indicaciones de aplicabilidad

Tipo: Salud e higiene
CCS: C51
ICS: 13.060
Organismo competente: National Disease Control and Prevention Administration
Comité técnico: National Disease Control and Prevention Administration

Relaciones

Sustituye a:GB 5749-2006