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WTRM102:  WATER/WASTEWATER MATH 1


Course Description

This course covers basic math concepts used in the water- wastewater-distribution industry. Topics include industry standard formulas, conversion factors, fractions, decimals, percentages, ratios, area and volume. ADVISORY: Eligible for Mathematics 205.


Learning Outcomes

  • Apply mathematics such as addition, subtraction, multiplication, and division with whole numbers, decimals, and fractions used in the Water Industry.
  • Utilize industry standard formula sheets and conversion factors. Convert cubic feet to gallons to pounds. Calculate the surface area in square feet of tanks and vessels.
  • Calculate linear feet measurements, perimeters, and circumferences of tanks, vessels, and weirs. Calculate volume in cubic feet of tanks and vessels
  • Calculate area in acres, volume in acre feet and convert square feet into acres, and cubic feet into acre feet. Calculate percent removal/efficiency of treatment processes. Identify peak flow, minimum flow, and calculate average daily flow.
  • Calculate average industrial, commercial, and domestic water uses. Calculate gallons per day per capita. Calculate population equivalents. Calculate detention time for tanks and vessels.
  • Calculate PSI in a well, tank or vessel. Convert feet of head into PSI. Calculate well draw down. Calculate temperature conversions from degrees Fahrenheit to Centigrade, and Centigrade to Fahrenheit
  • Calculate dose, demand, residual in chemical application. Utilize the pounds formula to calculate pounds of chemicals, sludge and bacteria in the system. Calculate surface loading rate in gallons/day per square foot. Calculate weir overflow rate in gallons/day per linear foot of weir.
  • Convert cubic feet into cubic yards. Calculate area, volume, gallons, and cubic yards of trapezoid shaped canals. Calculate velocity of moving water.


Last modified: November 25, 2014
Gavilan College Red Diamond 5055 Santa Teresa Boulevard Red Diamond Gilroy, CA 95020 Red Diamond (408) 848-4800