Standard No.:	GB 17051-2025
English Name:	Hygienic specification for facilities of secondary water supply
Chinese Name:	二次供水设施卫生规范
Chinese Classification:	C51    Environmental sanitation
Professional Classification:	GB    National Standard
ICS Classification:	13.060.20 13.060.20    Drinking water 13.060.20
Source Content Issued by:	SAMR; SAC
Issued on:	2025-05-30
Implemented on:	2026-6-1
Status:	to be valid
Superseding:	GB 17051-1997 Hygienic specification for facilities of secondary water supply
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1 business day

GB 17051-2025 Hygienic specification for facilities of secondary water supply English Translation Hygienic specification for facilities of secondary water supply 1 Scope This document specifies the basic hygienic requirements for secondary water supply facilities, machine room, water tank (pool), and the hygienic requirements and operation requirements of disinfection equipment. This document is applicable to facilities of secondary water supply for drinking. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 5749-2022 Standards for drinking water quality GB/T 5750 (all parts) Standard examination method for drinking water GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system GB 28232 Hygienic requirements for ozone disinfector GB 28233 Hygienic requirements for sodium hypochlorite generator GB 28235-2020 Hygienic requirements for ultraviolet appliance of disinfection GB 28931 Hygienic requirements for chlorine dioxide disinfectant generator GB/T 32091-2015 Ultraviolet equipment for water disinfection - Ultraviolet dose testing method GB 50015 Standard for design of building water supply and drainage 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 secondary water supply way of supplying water to households and users after re-storage, pressurization, sterilization or advanced treatment of centralized water supply 3.2 secondary water supply facilities equipment and pipelines for storage, pressurization, disinfection and transportation of centralized water supply before accessing households 3.3 water tank (pool) tank or pool for storing drinking water Note: According to different positions, it can be classified into low water tank (pool), middle water tank and high water tank. 3.4 non-negative pressure water supply equipment water supply equipment directly connected in series to the municipal water supply pipe network or other pressure pipe network, in this way, the existing pipe network pressure is effectively utilized, without generating any negative pressure to the municipal water supply pipe network or other pressure pipe network, thus stabilizing and regulating the flow Note: It consists of water pump, steady flow compensator, vacuum suppressor, control cabinet, control instrument, pipeline, valve, etc. [Source: CJ/T265-2016, 3.1, modified] 3.5 operating unit unit responsible for the operation, running, maintenance and management of secondary water supply facilities 4 Basic sanitary requirements

Foreword I 1 Scope 2 Normative references 3 Terms and definitions 4 Basic sanitary requirements 5 Hygienic requirements for machine room 6 Hygienic requirements for water tank (pool) 7 Hygienic requirements for disinfection equipment 8 Requirements for operation Bibliography