Water heating by a domestic water heater. Two conflicting safety issues affect water heater temperature—the risk of scalding from excessively hot water greater than , and the risk of incubating bacteria colonies, particularly "Legionella", in water that is not hot enough to kill them. Both risks are potentially life-threatening and are balanced by setting the water heater's thermostat to . The European Guidelines for Control and Prevention of Travel Associated Legionnaires’ Disease recommend that hot water should be stored at and distributed so that a temperature of at least and preferably is achieved within one minute at points of use. If there
Water management in Dhaka on the Padma River. The project costs USD407 million, of which USD290.8 million is financed by a soft loan from the Chinese government, the remainder coming from the Bangladeshi government. To alleviate the water scarcity, in 2011 the city of Dhaka announced it would amend its building code to require rooftop rainwater harvesting systems in new buildings. The measure aims to address the city's worsening water shortages and curb drops in groundwater levels. Collecting rainwater also will help avoid flooding problems in Dhaka during the monsoon season. DWASA is under the authority of the Ministry of Local Government, Rural Development