The MWSS Regulatory Office‘s Sewage Treatment Plant (STP) of the Week is the Tondo Sewage Pumping Plant. This STP is being operated by Maynilad Water Services, Inc. The Tondo Sewage Pumping Plant is certified under ISO 9001:2015 (Quality Management System), ISO 140001:2015 (Environmental Management System), OHSA 18001:2007 (Health and Safety Management System), and ISO 50001:2011 continue reading : STP of the Week: Tondo Sewage Pumping Plant
