A Missouri man who was swept more than a mile through a sanitary sewer he was checking is improving at a Kansas city hospital. Thirty-year-old Daniel Collins had been listed in critical condition after he was rescued Oct. 12 from a sewer system in suburban Raymore. Collins remains at St. Luke's Hospital, where he was upgraded Friday to good condition. The hospital says he's been treated for hypothermia, severe respiratory failure and pneumonia. The married father of three from Collins, Mo., was wearing a safety harness when he descended into the sewer. It's not known how he became untethered as he was swept by rushing water and sewage through the 27-inch pipe. Collins spent about 90 minutes in the sewer system before rescuers checking manholes pulled him to safety.