Mathematics Manual for Water and Wastewater Treatment Plant Operators provides a detailed and self-contained overview of the mathematics required by all plant operators, regardless of their level of licensure and experience. This single-volume text is a step-by-step training manual of math basics and advanced operator concepts and real-world problems. The text discusses applied math concepts for pumping and filtration, as well as concepts specific to wastewater, such as biosolid digestion, dewatering, and disposal. The book concludes with a comprehensive workbook section containing more than 1,700 practical math problems that illustrate typical questions from the State licensure examinations. The author has written Mathematics Manual for Water and Wastewater Treatment Plant Operators in straightforward, non-technical language. While the book is accessible to operators with little or no experience in plant operations, it is also valuable for those practitioners at the highest level of licensure. The book provides readers with a definitive understanding of and skill in performing the applied water/wastewater calculations essential for a successful career.