Water Treatment Operator Certification Study Guide test exam 2024/2025

Water Treatment Operator Certification Study Guide test exam 2024/2025 A continuously flowing watercourse Perennial Stream Algae causes PH to ....... at night Decrease What contributes to creation of algae blooms Increased nutrients Iron is found mostly in what sources of water Groundwater Also called the rule of reasonable sharing Riparian Doctrine Water high in salinity and warm is Low in dissolved oxygen Reservoir turnover Denser water at surface sinking toward the bottom Water that flows into rivers after rainfall Surface runoff Recreation can ....... of land adjacent to a reservoir increase the threat of erosion Water bearing geological zone composed of material deposited by flowing rivers Alluvial aquifer What effect will algae have on dissolved oxygen Increase DO during the day and lower DO during the night How does alkalinity effect the use of copper sulfate Copper sulfate is more effective as alkalinity decreases The amount of water in a formation depends on..... The porosity of the water-bearing formation What enables blue green algae to grow Nutrients Recommended loading rate of copper sulfate for algae control 5.4 lbs per acre of surface area Primary origin of coliform bacteria Animal or human feces Amount of water a well produces for each foot of drawdown Specific capacity Most common well used in public water supply Drilled well What is disinfection inactivation or killing of pathogenic organisms free chlorine residual valus are based on a contact time of.... 10 minutes Strength of Calcium Hypochlorite 65-70% What chemicals raise PH in water Soda Ash, Caustic Soda, As water temp increases, disinfection action....... Increases Maximum chlorine usage per day from a 150lb cylinder 42 lbs What chemical is used to soften water through chemical precipitation Calcium hydroxide (lime) Mudballs are clumps of........ Filter media and other material Coagulation occurs during the first ..... 1 to 5 seconds When should a filter be backwashed High head, turbidity breakthrough, or designated hours