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WS/T 90-2017: Evaluation on the effect of water-improving for defluoridation
Status: Valid WS/T 90: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| WS/T 90-2017 | English | 149 |
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Evaluation on the effect of water-improving for defluoridation
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WS/T 90-2017
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| WS/T 90-2017 | English | 149 |
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Evaluation on the effect of water-improving for defluoridation
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WS/T 90-2017
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| WS/T 90-1996 | English | 279 |
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Criteria for evaluation of effect of water supply improvement and defluoridation measures
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WS/T 90-1996
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PDF similar to WS/T 90-2017
Standard similar to WS/T 90-2017 GBZ 57 GB/T 31989 WS/T 87 WS/T 89 Basic data | Standard ID | WS/T 90-2017 (WS/T90-2017) | | Description (Translated English) | Evaluation on the effect of water-improving for defluoridation | | Sector / Industry | Health Industry Standard (Recommended) | | Classification of Chinese Standard | C61 | | Word Count Estimation | 6,653 | | Date of Issue | 2017-08-16 | | Date of Implementation | 2018-02-15 | | Older Standard (superseded by this standard) | WS/T 90-1996 | | Regulation (derived from) | State-Health-Communication (2017) 13 | | Issuing agency(ies) | National Health and Family Planning Commission of the People's Republic of China | WS/T 90-2017: Evaluation on the effect of water-improving for defluoridation---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Evaluation on the effect of water-improving for defluoridation
ICS 11.020
C 61
WS
People's Republic of China Health Industry Standard
Replaces WS/T 90-1996
Evaluation of the effect of improving water and reducing fluoride
2017-08-16 released
2018-02-15 implemented
Published by the National Health and Family Planning Commission of the People's Republic of China
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces WS/T 90-1996 "Effectiveness Evaluation Standards for Measures to Improve Water and Fluoride".
Compared with WS/T 90-1996, the main changes in this standard are as follows.
-Added terms and definitions;
-Added evaluation principles;
-Revised the fluorine content index of drinking water;
-Revised the examination time and object of fluorosis.
-Separately evaluate the effects of centralized water and fluorine reduction and decentralized water and fluorine reduction;
-Revised the classification of evaluation results and added a basic pass;
-Deleted the original appendix A, water source replacement project inspection registration form, appendix B physical and chemical fluorine reduction project inspection registration form, and appendix C
Registration form for fluorosis examination of permanent teeth of children born after water change;
-Added new appendix A sound management and monitoring system and appendix B sampling method for evaluation indicators.
This standard was drafted. Chinese Center for Disease Control and Endemic Disease Control, Inner Mongolia Endemic Disease Control and Research Center,
Shandong Institute of Endemic Disease Control.
The main drafters of this standard. Zhao Lijun, Sun Dianjun, Gao Yanhui, Li Yanhong, Wang Xuesong.
The previous versions of the standards replaced by this standard are.
--WS/T 90-1996
Evaluation of the effect of improving water and reducing fluoride
1 Scope
This standard specifies the principles, indicators and results for evaluating the effect of improving water and reducing fluoride.
This standard applies to the evaluation of drinking water-type endemic fluorosis endemic areas to improve water and reduce fluoride effects.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB 17017 Control Standard for Endemic Fluorosis Areas
GB 5749 Sanitary Standard for Drinking Water
GB/T 5750.5 Standard test methods for drinking water--Inorganic and non-metallic indicators
SL 308 Qualification Standard for Village and Town Water Supply Units
WS/T 208 fluorosis diagnosis
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Projects and facilities for water supply
Measures to provide residents with drinking water, including various centralized water supply projects and various decentralized water supply facilities.
3.2
Central water supply
A water supply method that collects water from a water source and sends it to a service user or a public water collection point through a water distribution network. Including self-built facilities,
Water supply stations that provide daily drinking water for users and qualitative water supply for public places and residential communities.
3.3
Non-central water supply
Scattered households take water directly from the water source without any facilities or only simple facilities.
3.4
Water-improving for defluoridation
In drinking-water endemic fluorosis endemic areas, through the construction of water supply projects or facilities, the fluorine content of residents' drinking water is reduced to control drinking water.
The prevalence of type fluorosis.
4 Evaluation principles
4.1 Evaluate water supply projects and facilities built and used for more than one year.
4.2 Centralized water improvement and fluorine reduction (large or small water supply and physical and chemical defluorination projects, covering 1 village or more)
Evaluation; decentralized water improvement and defluorination (decentralized water supply well, rain cellar, physical and chemical defluorination equipment, etc., covering less than 1 village)
Evaluate for the unit.
4.3 The evaluation of the effect of improving water and reducing fluoride on the village level is based on the evaluation of natural villages where there is a natural village, and administrative villages where there is no natural village.
5 Evaluation indicators
5.1 Water supply project. In addition to normal maintenance, it can provide sufficient water throughout the year, and has a sound management and monitoring system (see Appendix A).
The quantity, water source and protection shall comply with SL 308.
5.2 Fluorine content in drinking water. See Appendix B for sampling method. Tested according to GB/T 5750.5 method, in line with GB 5749 for water supply parties of different scales
Of water quality fluoride limit.
5.3 Prevalence of fluorosis. See Appendix B for sampling methods. Diagnosis according to WS/T 208, in line with GB 17017 for drinking-type fluorosis
Provisions on the prevalence limit of district fluorosis.
6 Evaluation results
6.1 Centralized water improvement and fluoride reduction
6.1.1 Qualification. It also has the requirements of 5.1 ~ 5.3.
6.1.2 Basic qualification. Only the requirements of 5.1 and 5.2 are met, and the requirements of 5.3 are not met.
6.1.3 Disqualification. Failure to meet the requirements of 5.1 or 5.2.
6.2 Decentralized water improvement and fluoride reduction
6.2.1 Qualification. Have both 5.2 and 5.3 requirements.
6.2.2 Basic qualification. Only the requirements of 5.2 are met, but the requirements of 5.3 are not met.
6.2.3 Failure. Failure to meet the requirements of 5.2.
Appendix A
(Normative appendix)
Sound management and monitoring system
A.1 Sound management system
The property right of the water improvement and fluorine reduction project is clear, the main body of management and protection and the operation management method are clear, which can promote the long-term effective operation of the water improvement and fluorine reduction project. With
The operational management, safety production and operation management indicators of the entity can be implemented with reference to SL 308.
A.2 Sound monitoring system
The water improvement and fluorine reduction project is included in the monitoring scope of the relevant local departments. The water quality monitoring of the water improvement and fluorine reduction project for changing the water source should be conducted at least once a year.
The water quality monitoring of the defluoridation and defluorination project will be conducted at least once every six months. Water quality monitoring projects should include fluoride.
Appendix B
(Normative appendix)
Sampling method for evaluation index
B.1 Fluorine content in drinking water
B.1.1 Water improvement and fluorine reduction evaluation based on the project, and one water supply improvement project and one water supply replacement project shall be collected during the flood season and the dry season.
For water, calculate the arithmetic mean of each water sample separately, and collect 1 part of the factory water for the physical and chemical defluoridation water improvement project.
B.1.2 Water improvement and fluoride reduction evaluation based on villages. Collect 5 water samples from the east, west, south, north, and middle to calculate the mean.
B.2 Prevalence of fluoride plaque
B.2.1 Water improvement and fluoride reduction evaluation based on the project, select the 2 ward villages with the worst disease before the water improvement (if the project covers only one
Only one village will be selected in the ward village). All children born between 8 and 12 years of age who are born and live in the village, and the number of children less than 50 should be checked in
In the other ward-covered villages covered by Cheng, the village with the worst disease continued to be selected for investigation to meet the requirement of 50 people. If the water and fluorine reduction project covers
The total number of children between 8 and 12 years of age in all ward villages is still less than 50, and all children between 8 and 12 years of age will be examined.
B.2.2 The evaluation of improving water and reducing fluoride in the village unit is to check all children born 8 to 12 years old who live and live locally.
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