Subject:
PHILIPPINE STANDARDS FOR DRINKING WATER 1993 UNDER THE PROVISION OF CHAPTER II, SECTION 9 OF PD 856, OTHERWISE KNOWN AS THE CODE ON SANITATION OF THE PHILIPPINES.
To implement the provisions of section 9, otherwise known as the Prescribed Standards and Procedures of Chapter ll of the Code on Sanitation of the Philippines, PD 856, this Philippine National Standards for Drinking Water 1993 hereby revises and updates the 1978 National Standards for Drinking Water. The Philippine National Standards for Drinking Water 1993 (PNSDW 1993) is designed to guide the Waterworks Officials, Developers and Operators of Water Supply Systems both Government and Private entities, health and sanitation authorities and the general public and all other concerned. The new standards cover requirements for the acceptable values of the determined parameters in measuring water quality. These parameters include microbiological, physical, chemical and radiological compositions of the water. The standard also delineates values established in conforming with the medical and health implication of the parameters as opposed to values established purely to satisfy aesthetic requirements. Section 1. DEFINITION OF TERMS 1. Aesthetic - aspects of drinking water quality perceived by senses, including odor, taste, color and clarity. Aerobe An organism capable of growing in the presence of oxygen.
2. 3.
Aerobic - Description of biological or chemical processes that can occur only in presence of oxygen. Anaerobic - Life processes or chemical reactions that occur in the absence of oxygen or a condition in which Dissolved Oxygen (DO), is not detectable in the aquatic environment. Available residual Chlorine - Generally refers to the part of the chlorine that will with orthotolidine or ampero-metric tests and exhibits significant germicidal activity. Bottled water - means water that is placed in a sealed container or package and is