An ultrasonic control technology uses a wide spectrum of some 2,000 frequencies to kill multiple species of algae and limit biofilm formation.

Are you facing a sensitive issue like PFAS in drinking water or biosolids? Here are some foolproof ways to lose your community’s trust and support.

Licensing exams can be challenging. Our Exam Study Guide helps you prepare by presenting questions similar to those on an actual exam. You can find many more sample questions on the TPO website at www.tpomag.com/study.