Metropolitan Waterworks and Sewerage System
- Private corporation provides potable water and sewerage system for Metro Manila. Full service areas listed.
- http://www.mwss.gov.ph/

Maynilad Water Services, Inc.
- Private firm managing the water services of the western zone of Metro Manila. Provides company profile, news and service interruptions, rates and contact information.
- http://www.mayniladwater.com.ph/

Manila Electric Company (Meralco)
- Energy and power distribution company with its corporate office and branch locations throughout Metro Manila.
- http://www.meralco.com.ph

Manila Water Company
- Official site of the nations capital potable water resource. Has full service and contact information.
- http://www.manilawater.com/