Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time, we covered a set of wastewater and drinking water treatment questions on the topics of Rotifers in Activated Sludge Systems and Arsenic Regulations. This time you can test your knowledge about settleometer tests and public notification requirements.
Wastewater Treatment Sample QuestionWhen conducting a sludge settleometer test, what does the first five minutes of the test indicate?
A. Presence of filamentsB. Particle collision rateC. Presence of zoogloeal matterD. No useful indication
Water Treatment Sample Question
What public notification is triggered if a water system exceeds the nitrate MCL?
A. Tier 1B. Tier
