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GB/T 17218-2025: Hygienic safety evaluation of chemicals used in drinking water treatment
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GB/T 17218-2025: Hygienic safety evaluation of chemicals used in drinking water treatment

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ICS 13.060.20 CCSC51 National Standards of the People's Republic of China Replaces GB/T 17218-1998 Hygiene and safety evaluation of chemical treatment agents for drinking water Published on 2025-08-29 Implemented on 2026-03-01 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of Contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.Hygiene and safety requirements 1 5.Test Method 2 Appendix A (Normative) Recommended Evaluation Dosage and Testing Indicators for Chemical Treatment Agents for Drinking Water 5 Appendix B (Normative) Toxicological Safety Evaluation Procedures and Methods 12 Appendix C (Normative) Method for the Determination of Maleic Acid in Water 15 Reference 17

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document supersedes GB/T 17218-1998 "Hygienic Safety Evaluation of Chemical Treatment Agents for Drinking Water" and is consistent with GB/T 17218-1998. Aside from structural adjustments and editorial changes, the main technical changes are as follows. a) The scope of the document has been changed (see Chapter 1, Chapter 1 of the.1998 edition); b) Added terms and definitions (see Chapter 3); c) The metal indicators antimony, barium, beryllium, thallium, and copper have been added (see 4.2.1); d) Limits for copper, total chromium, dimethyldiallyl ammonium chloride, and maleic acid have been added (see 4.2.2); e) The procedures for sample collection and preservation have been changed (see 5.1, A1 of the.1998 edition); f) Sample collection information has been added (see 5.1); g) The method for collecting packaging samples has been changed (see 5.1.1.2, A1.1.1.2 of the.1998 edition); h) The sample size for sample preparation and the sample pretreatment method have been changed (see 5.2.2, A2.2 of the.1998 edition); i) The formulation of polydimethyldiallylammonium chloride, acrylate-2-acrylamide-2-methylpropanesulfonic acid copolymer and polymaleic acid were added. Method (see 5.2.2); j) Fifty-five new chemical treatment agents for drinking water have been added (see Table A.1); k) Cationic polyacrylamide was removed (see Table A1 in the.1998 edition); l) The evaluation dosage of aluminum-containing coagulants has been changed (see Table A.1, Table A1 of the.1998 edition); m) The toxicological safety assessment classification, test content, and result evaluation were revised (see Appendix B, Appendix B of the.1998 edition); n) A method for detecting maleic acid in water has been added (see Appendix C). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Center for Disease Control and Prevention. This document was drafted by. the National Institute for Environmental Health and Related Product Safety, Chinese Center for Disease Control and Prevention; and the Jiangsu Provincial Center for Disease Control and Prevention. (Jiangsu Academy of Preventive Medicine), Shanghai Municipal Center for Disease Control and Prevention (Shanghai Academy of Preventive Medicine), Zhejiang Provincial Health Monitoring and... Evaluation Center, Hunan Provincial Health and Family Planning Comprehensive Supervision Bureau. The main drafters of this document are. Hu Xiaojian, Zhu Ying, Wang Chao, Zhang Miao, Lin Shaobin, Ji Wenliang, Zhang Yun, Su Yi, Shen Tu Hang, and Cao Zhaohui. This document was first published in.1998, and this is its first revision. Hygiene and safety evaluation of chemical treatment agents for drinking water 1.Scope This document specifies the hygiene and safety requirements for chemical treatment agents for drinking water and describes the corresponding testing methods. This document applies to applications such as coagulation, flocculation, reduction, pH adjustment, scale inhibition, fluorination, disinfection, oxidation, softening, algae removal, defluorination, and dechlorination. Hygiene and safety evaluation of chemical treatment agents for drinking water.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB 5749 Standard for Drinking Water Quality GB/T 5750 (all parts) Standard Examination Methods for Drinking Water GB/T 6682 Specifications and test methods for water used in analytical laboratories GB/T 33085 Water Treatment Agent - Polydimethyldiallylammonium chloride GBZ /T 240 (all parts) Procedures and test methods for toxicological evaluation of chemicals 3.Terms and Definitions The following terms and definitions apply to this document. 3.1 Evaluation dose Dosage levels used for evaluating the health and safety of chemical treatment agents for drinking water. Note. The evaluation dose is the maximum dosage of the chemical treatment agent under normal use conditions. 3.2 packaged sample Samples that are pre-packaged in quantitative quantities and have uniform mass or volume markings within a certain quantitative limit. 3.3 bulk sample Non-prepackaged samples. 4.Hygiene and safety requirements 4.1 Sensory characteristics requirements When chemical treatment agents for drinking water are used at the prescribed dosage, the sensory properties of the treated water should meet the requirements of GB 5749. 4.2 Specific Substance Classifications and Requirements 4.2.1 Specific substances are divided into 4 categories. a) Metals and metalloids. arsenic, cadmium, total chromium, lead, mercury, silver, antimony, barium, beryllium, selenium, thallium, copper; b) Inorganic substances. depend on the product's raw materials, formulation, and manufacturing process; c) Organic matter. depends on the product's raw materials, formulation, and manufacturing process; d) Radioactive materials. Total alpha radioactivity and total beta radioactivity are determined for products made directly from minerals. 4.2.2 Specific requirements for substances are as follows. a) Specific substances in drinking water chemical treatment agents shall be tested according to the test methods specified in Chapter 5, and the corresponding detection indicators shall be as follows. Appendix A; b) When a specific substance introduced into drinking water by chemical treatment agents is a substance specified in GB 5749, the limit value of that substance shall be specified. It should be 10% of the limit specified in GB 5749, except for specific substances that are otherwise specified; c) When specific substances introduced into drinking water by chemical treatment agents are not specified in GB 5749, relevant domestic and international standards shall apply. For accurate determination, the limit for this substance should be 10% of the limit in relevant domestic and international standards, except for specific substances as otherwise specified. d) If there is no basis to determine the limit for a specific substance introduced into drinking water by chemical treatment agents, the limit shall be determined according to Appendix B. The maximum permissible concentration of a substance in drinking water shall be limited to 10% of the maximum permissible concentration. e) The limit for copper is 0.2 mg/L, the limit for total chromium is 0.01 mg/L, and the limit for dimethyl diallyl ammonium chloride monomer is [missing value]. The limit for maleic acid is 0.05 mg/L, and the limit for maleic acid is 0.07 mg/L. 5.Test methods 5.1 Sample Collection and Preservation 5.1.1 Collection of solid/liquid samples 5.1.1.1 Collection of Bulk Samples In the storage container of bulk samples, approximately 100 mL or 100 g samples were collected from different depths and locations evenly distributed within the container. Five independent samples were thoroughly mixed to form a total of approximately 500 mL or 500 g of mixed sample. Sample collection information was recorded. 5.1.1.2 Collection of Packaging Samples For samples with intact packaging, a mixed sample can be collected from the same batch of packaged samples. The number of packages collected is approximately equal to the number of packages in the batch. 5% of the quantity of each package, with a minimum of 5 and a maximum of 15.If there are fewer than 5 packages, all packages should be sampled. (Based on package size...) Smaller, combine all collected packaged samples into one sample and then collect them using the same method as bulk samples; or use a different method for collecting all packaged samples. 5.1.1.1 Sample collection method. Thoroughly mix the mixed samples collected from each package into one sample. Record the sample collection information. 5.1.2 Preservation of Solid/Liquid Samples The mixed sample collected in 5.1.1.1 or 5.1.1.2 shall be aliquoted into three clean, sealed, and dry glass containers or suitable containers. The containers for each sample are labeled with the sample name, batch number, maximum dosage, active ingredient content, storage conditions, collection date, and collection method. The person in charge of the sample is responsible for recording and storing relevant sampling information, including the manufacturer, place of origin, and sample packaging type. One sample is used for... The analysis was performed, and two additional samples were preserved for testing (if necessary), with a shelf life of one year (for short-expiration chemical treatments, preserve until expiration). 5.1.3 Gas Sample Collection and Preservation Two representative samples were collected simultaneously using gas sampling tubes. Sample collection was performed according to the manufacturer's instructions and safety protocols. The container should be labeled with the sample name, batch number, maximum dosage, active ingredient content, storage conditions, collection date, and the person in charge of sampling. At the same time, proper labeling should be provided. Record and preserve sampling information such as the corresponding manufacturer, place of origin, and sample packaging type. ...