 Water services used to be provided by the Metropolitan <unk> and <unk> System , which served 30 % of the city with most other sewage being directly dumped into storm drains , <unk> tanks , or open canals . <unk> was <unk> in 1997 which split the water concession into the east and west zones . The <unk> Water Services took over the west zone of which Manila is a part . It now provides the supply and delivery of <unk> water and <unk> system in Manila , but it does not provide service to the southeastern part of the city which belongs to the east zone that is served by Manila Water . Electric services are provided by <unk> , the sole electric power distributor in Metro Manila . 
