Class C Water License Exam Questions & Answers Correct 100%

a disease that cannot be contracted by drinking contaminated water is - Answer malaria a non-permit confined space by OSHA standards means a confined space that - Answer does not contain or have the potential to contain any hazard capable of causing death when used in connection with the safe drinking water act, the term mcl means - Answer maximum containment level examples of non-community water systems include - Answer highway rest areas the TCEQ requires that results be recorded submitted daily for surface water supplies for - Answer disinfectant residuals,turbidity, total solids, ph, alkalinity tracking and maintaining an operator's training records is ultimately the responsibility of the - Answer operator an employee withought a breathing apparatus is in a room where chlorine gas suddenly begins leaking. What should the employee do first - Answer keep mouth closed, keep head as high as possible, and quickly walk out the room, holding his breath if possible before charging a gas chlorine cylinder in a room, the first step should be - Answer start exhaust vent fan waterworks operator's holding grade c certificates are required to renew their certificates every three years and to - Answer inform the TCEQ of any address changes in order to insure that the water produced meets TCEQ standards, each surface water treatment plant must have a surface water operator on duty at all times when the plant is in operation or the plant must be provided with - Answer continuous turbidity and disinfectant residual monitors, automatic alarms systems, and an automatic shutdown system the major responsibility of a certified waterworks operator is to - Answer insure that a safe and adequate supply of drinking water is delivered to the customers tap according to the TCEQ, a public water system is defined as any water system that provides piped water for human consumption to at least _ service connections on a year-round basis or regularly serves _ individuals daily at least_ days out of the year - Answer 15 25 60 most of the surface water in texas comes from - Answer precipitation that falls within the state the most important factor in preventing accidents Is - Answer the attitude of the employee organics in surface water will combine with halogen to form - Answer trihaolmethanes according to the average annual water budget for Texas, the majority of surface water leaves the state by - Answer evaporation and transpiration the term water stabilization refers to - Answer pH adjustments which pH measurement would indicate that water is basic (6.0;6.9;7.0;8.3) - Answer 8.3 the safe water drinking act has set water quality standards for which category - Answer physical and chemical, radiological, and bacteriological when a coagulant reacts with finely divided and suspended material in raw water, a - Answer floc is formed the rules and regulations for public water systems require straight flow rectangular sedimentation basins to be designed to provide detention time of at least - Answer 6 hours which of the following statements regarding the sedimentation process is true - Answer the 4 traditional zones of a rectangular sedimentation basin are the inlet zone, settling zone, and the sludge zone tastes and odors caused by decaying vegetation can often be removed in the treatment process by the use of - Answer activated carbon What chemical is used for softening water - Answer lime (soda ash) the process of coagulation includes - Answer A chemical reaction, a physical reaction, an agglomeration reaction, and neutralization of charged particles If sludge is allowed to remain too long on the bottom of a sedimentation basin, a problem could develop with - Answer taste and odor problems,reduction of detention time in basin, resuspension of solids, and creation of septic conditions