Water Treatment Operator Certification Study Guide (AWWA)

Water Treatment Operator Certification Study Guide (AWWA) 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