28
Nov
Residents of the country's fourth-largest city were told to boil their water on Sunday after pressure in the pump-driven water system dropped due to a power outage, raising concerns about possible contamination.The boil advisory essentially covers all of Houston's 2.3 million residents. Bottled water is an acceptable substitute, public works officials said in a statement.The Houston Independent School District said schools would be closed to employees and students Monday and the closure could be extended depending on how quickly the water issue is resolved."We will be closely monitoring the situation and will provide additional updates tomorrow," the district said in…