Chemical spill in Philadelphia prompts bottled water rush and tap water advisory.

Philadelphia officials say the city's water is safe to drink for now after a chemical spill in a local river. A pipe ruptured on Friday at chemical plant Trinseo PLC, leaking hazardous material into a tributary of the Delaware River, a source of water for millions of people. Local authorities said later on Sunday there had been no contamination in the city's water system. The Delaware River Basin supplies water to over 15 million people across 4 states, according to the US government.