[Editor’s Note: We’ve enhanced our Exam Study Guide Series to give you more of the content you love. Instead of two short questions per month on the topics of water and wastewater treatment, you’ll now find a pair of study questions every week with high-quality explanations from our expert contributor Ron Trygar of the University of Florida’s TREEO Center. Make no mistake, this will be an excellent resource going forward. Ron is the real deal — check out his bio at the end of this week’s quiz.]Maintaining your education is important, especially in a career that demands licensing exams. Prove you’re an
