Tolong jelaskan mengenai Rujukan dari Bekalan air dan sanitasi di Filipina dalam bahasa melayu

Metropolitan Waterworks and Sewerage System (MWSS)

Manila Water Company (Concessionaire of the East Zone of Metro Manila)

Maynilad Water Services, Inc. (Concessionaire of the West Zone of Metro Manila)

Philippine Association of Water Districts

Metropolitan Waterworks and Sewerage System Regulatory Office

National Water Resources Board (NWRB)

Bekalan air dan sanitasi di Filipina