By Othel V. Campos | Manila Standard
September 12, 2023
West zone concessionaire Maynilad Water Services Inc. is spending over P3 billion to upgrade 17 of its existing 22 sewage treatment plants (STPs) over the next five years.
The upgrade involves adding treatment processes in 17 STPs to enhance nutrient-removal capability. This is in compliance with the revised effluent standards under DENR Administrative Order DAO 2021-19 of the Department of Environment and Natural Resources which set more stringent wastewater treatment guidelines versus those imposed in other countries.
Maynilad’s Parañaque Water Reclamation Facility, the biggest STP in terms of volume output, is already compliant with DAO 2021-19.
By 2027, all 22 existing wastewater treatment plants in the west zone―which have a combined treatment capacity of around 684,707 cubic meters of wastewater per day―will be upgraded to conform to DAO 2021-19 standards, Maynilad said.
Maynilad said the new STPs it would build in the future would be fitted with the upgraded nutrient-removal processes.