Metropolitan Waterworks and Sewerage System

Metropolitan Waterworks and Sewerage System
Pangasiwaan ng Tubig at Alkantarilya sa Kalakhang Maynila

MWSS Headquarters
Agency overview
FormedJune 19, 1971 (1971-06-19)
Preceding agencies
  • Carriedo Water System (1882)
  • Manila Water Supply System (1908)
  • Metropolitan Water District (1919)
  • National Waterworks and Sewerage System Authority (1955)
TypeRegulatory agency
HeadquartersKatipunan Avenue, Balara, Diliman, Quezon City, Philippines
Annual budget5.69 billion (2022)
Agency executive
Parent departmentOffice of the President of the Philippines
Websitemwss.gov.ph

The Metropolitan Waterworks and Sewerage System (MWSS; Filipino: Pangasiwaan ng Tubig at Alkantarilya sa Kalakhang Maynila), formerly known as the National Waterworks and Sewerage Authority (NAWASA), is a government agency responsible for overseeing water privatization in Metro Manila and the nearby provinces of Cavite and Rizal, in the Philippines.

The agency divided the water concession into two zones: the East Zone, awarded to Manila Water, and the West Zone, awarded to Maynilad Water Services.