COLUMBIA, Mo. (KMIZ) The city of Eldon lifted a four-day-long mandatory boil order Saturday morning, after routine testing found Total Coliform and E. coli in the water supply Tuesday. The city started an emergency sanitisation process earlier this week, which uses chlorine to kill harmful bacteria. Now that the boil order has been lifted, the city is asking residents to flush lines by running cold water for three to five minutes from any faucet…