Water services used to be provided by the Metropolitan Waterworks and Sewerage System, which served 30% of the city with most other sewage being directly dumped into storm drains, septic tanks, or open canals. MWSS was privatized in 1997, which split the water concession into the east and west zones. The Maynilad Water Services took over the west zone of which Manila is a part. It now provides the supply and delivery of potable water and sewerage 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 Meralco, the sole electric power distributor in Metro Manila.