Study Guide Answer Key

Here are the answers to the April 15, 2021 edition of TPO's Exam Study Guide: 1. The MPN (Most Probable Number) method for fecal coliform testing has become one of the most common methods for testing. What is a disadvantage for MPN fecal coliform analysis? The answer to the question is D, results are not very accurate and there's a high probability of false positives. Understanding the many types of laboratory procedures and analysis is important for the operators understanding and ability to properly operate a wastewater treatment facility. Fecal coliform testing is required on most if not all NPDES permits. MPN has become