Water Pump, KarachiWater Pump is a residential neighborhood in the Karachi Central district of Karachi, Pakistan. It is near the main water pump that supplies fresh water to the city of Karachi.DemographyEthnic groups in Water Pump include Sindhis, Kashmiris, Seraikis, Pakhtuns, Balochis, Memons, Bohras and Ismailis.