HOUSTON – A large part of Houston and surrounding areas are under a 24-hour boil water notice after a massive water main break in east Houston flooded streets and surrounding neighborhoods Thursday afternoon. That boil water notice prompted Houstonians to rush to stores to stock up on bottled water. RELATED: Here are answers to your questions about the boil water notice in Houston after a major water main break"I'll probably try to go somewhere else to see if there's something available," said Patel. Per the Houston Water boil water notice, residents in the affected area should use bottled - or boiled water - for drinking, making ice, brushing teeth, cooking and water for pets. According to Houston Water, once the boil water notice is lifted, flush your water system by running all cold-water faucets in your home for at least a minute.