The Ponca City (Oklahoma) Environmental Services Department is well-versed in wastewater issues, but working in an oil refinery stretched its comfort zone.Ponca City is a community of 26,000 built on the fortunes of the oil industry. While its economy continues to diversify, many of its citizens work to refine crude oil. When a 100-year-old sanitary sewer main passing through the center of the Phillips 66 Ponca City refinery complex showed signs of failure, the city leveraged a unique partnership with this industrial customer to solve the issue.Ponca City is located at the midpoint of three larger cities: Oklahoma City;
