Downloadable PDF of the Philippine National Standards for Drinking Water, 2017. On desktop, this document may be downloaded or printed by clicking the appropriate icons in the upper right of the pdf viewer. provisions and requirements of the PINSDW 2007. In view of the above, all Water Districts are required to submit regularlv to LWUA the PNSDW prescribed monthly Microbiological quality monitoring with number of samples commensurate with the population served, with copy of the test results and summarized with the hereto attached Annex A Format. Created Date: 7/19/2017 11:33:28 AM