Clean Water Services is a regional government agency within the state of Oregon that manages sewer lines, stormwater systems and wastewater treatment plants. They hold numerous permits for pollutant discharges to the Tualatin River where a TMDL has been completed. The case study walks through the steps of stakeholder outreach, watershed assessment, permitting and regulatory requirements, and development of water quality trading and other tools for their combined discharges to the river.
