Rolling Revision of the WHO Guidelines for Drinking-Water Quality

Rolling Revision of the WHO Guidelines for Drinking-Water Quality

Revision of the WHO guidelines for drinking water quality.

This paper describes the activity of the World Health Organization in the field of drinking water quality, particularly the revision of the Guidelines for drinking water quality published in 1984. This process will be completed with the publication of new guidelines in 1993. The paper reports the physical, chemical and biological agents considered in the revision process, the procedure used to ...

تعیین میزان آلودگی کلیفرم مدفوعی منابع آب برخی روستاهای شهرستان ساری با تست MPN

Background and purpose: Safe drinking is water that does not have any chemical and microbial contamination. According to the World Health Organization (WHO) guideline standards for drinking water total and fecal coliform the indicator of fecal contamination must not be detectable in any 100 ml samples. Pollution indicator bacteria such as coliforms and fecal coliforms were enumerated using a mu...

Nitrate and nitrite in drinking-water Background document for development of WHO Guidelines for Drinking-water Quality

Requests for permission to reproduce or translate WHO publications — whether for sale or for non-commercial distribution — should be addressed to WHO Press, at the above address (fax: +41 22 791 4806; e-mail: [email protected]). The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Heal...

بررسی کیفیت آب شرب بردسیر در سال‌های 1389-1388 (گزارش کوتاه)

    Background and Objectives: Access to safe and adequate drinking water has been an important national goal in different countries. On the other hand, the possibility of microbial contamination and lack of control water quality chemicals is of concern to health authorities in societies. The purpose of this research was to determine the microbial and chemical quality of drinking water in bards...