Assessing the Effect of a Dumpsite to Groundwater Quality in Payatas, Philippines (Report‪)‬

INTRODUCTION The 15-ha Payatas open dumpsite is within the Payatas estate located at the northeastern district of Quezon City, Philippines. The Payatas dumpsite is situated half a kilometer southeast of the Novaliches Reservoir, the main source of drinking water for Metro Manila. Garbage dumped and accumulated for several years at the Payatas open dumpsite had been identified as a potential threat to the metropolis water supply. Bacud et al. (1) reported that the acidification and the presence of nitrates and coliform bacteria found in the groundwater along the dump may be traced to the Payatas open dumpsite.