Oregon Collection System Operator Certification
Oregon DEQ certifies Collection operators on a Grade I through Grade IV ladder, plus a Small Wastewater System (SWWS) credential for small combined collection/treatment systems.
Rainfall-Driven I&I
Oregon's wastewater collection systems are shaped by heavy west-side rainfall — Portland and the Willamette Valley get 35-50+ inches annually, much of it concentrated in winter. This drives significant infiltration and inflow (I&I) into aging combined and separate sewer systems, and stresses lift stations during wet-weather peaks. Collection operators need a strong grasp of I&I identification and mitigation techniques given how central this challenge is to Oregon operations.
Portland's Big Pipe Project
Portland's Big Pipe project is a landmark regional example of I&I/CSO (combined sewer overflow) control investment — it adde