To properly operate a waterworks or wastewater treatment plant and to pass the examination for a waterworks/wastewater operator's license, it is necessary to know how to perform certain calculations. All operators, at all levels of licensure, need a basic understanding of arithmetic and problem-solving techniques to solve the problems they typicall

chapter 1|8 pages


chapter 2|80 pages

Basic Units of Measurement and Conversions

chapter 3|6 pages

Sequence of Operations

chapter 4|10 pages

Fractions, Decimals, and Percent

chapter 5|2 pages

Rounding and Significant Digits

chapter 6|2 pages

Powers of Ten and Exponents

chapter 7|4 pages

Averages (Arithmetic Mean) and Median

chapter 8|16 pages

Solving for the Unknown

chapter 9|4 pages

Ratios and Proportions

chapter 10|26 pages

Electrical Calculations

chapter 11|16 pages

Circumference, Area, and Volume

chapter 14|26 pages

Pumping Calculations

chapter 15|12 pages

Water Source and Storage Calculations

chapter 16|28 pages

Water/Wastewater Laboratory Calculations

chapter 17|10 pages

Basic Mathemathics Practice Problems