LIMAY WATER DISTRICT

LOBO WATER DISTRICT

LOPEZ WATER DISTRICT

MACTAN ROCK INDUSTRIES INC.

MANILA WATER COMPANY

MANILAWATER PHILIPPINE VENTURES

MASINLOC WATER DISTRICT

MAYNILAD WATER SERVICES

MENDEZ WATER DISTRICT

METRO COTABATO WATER DISTRICT

METRO KIDAPAWAN WATER DISTRICT

METRO LIPA WATER DISTRICT

METRO PACIFIC DUMAGUETE WATER SERVICES INC.(MDW)

METRO PACIFIC ILOILO WATER INC.

METRO ROXAS WATER DISTRICT (MRWD)

METRO VIGAN WATER DISTRICT

METROPOLITAN CEBU WATER DISTRICT

MURCIA WATER DISTRICT (NEGROS OCCIDENTAL)

OBANDO WATER COMPANY

ORION WATER DISTRICT