Class D Water License - Texas

_____ allows uniform pump rates, supplies water for firefighting, and provides time for disinfection. - Storage _____ and _____ and other minerals cause hardness in water. - Calcium and magnesium _____ are underground, water-bearing formations yielding useful quantities of water. - Aquifers _____ can adapt to conditions that would kill a human. - Cockroaches _____ cause small particles in water to clot together forming floc, and this process, flocculation, forms larger particles that settle more readily. - Coagulants _____ facilities equalize demand on the water supply. - Storage _____ fecal matter entering a water supply transmits pathogens to healthy people. - Infected _____ is a process that forces water through a membrane. - Reverse osmosis _____ is a tank, usually steel, supported aboveground on a tower. - Elevated storage _____ is an electrochemical method of preventing corrosion of the interior of metal tanks. - Cathodic protection _____ is put into bacteriological sample bottles to dechlorinate the water. - Sodium thiosulfate _____ is the amount of suspended matter such as clay, silt, organic matter, and microorganisms in the water. - Turbidity _____ is the final step in removing suspended matter and chlorine-resistant microorganisms. - Filtering _____ is the force the pump works against. - Head _____ must be notified about changes to public water systems involving water source, water quality, and health hazards. - The state _____ occurs inside the pump volute or casing and is caused by insufficient pressure on the suction side of the pump, which creates a vacuum and causes water vapor bubbles to form. - Cavitation