Maintaining your education is important, especially in a career that demands licensing exams. Prove you’re an expert operator by answering these questions and others from our Exam Study Guide Series.

Also in this week's water and wastewater news, vandals in Northglenn, Colorado, damage flow-control gates, diverting water away from the city for two days

High school and university winners of Xylem Ignite Global Student Innovation Challenge claim $20,000 prize purse

Also in this week's sewer and water news, the Arizona Department of Water Resources says up to 70% of municipal water is being used for outside purposes like watering plants, grass and filling swimming pools

USC researchers identify a new treatment for harmful aldehydes in wastewater