The Clark County Water Reclamation District, Las Vegas has been hit with a cyber-attack but officials say operations haven't been disrupted and no customer or employee information was hacked. The agency said in a statement Monday that its computer system was attacked late Friday night. Computers were shut down as a precaution but operations at all seven treatment facilities and customer service centers were not affected. [...] Its website said it's responsible for treating 170 million gallons of used water and sewage from thousands of homes, hotels, schools, churches and businesses.