Florida drinking water operator "B" Practice Questions & Answers 2024/2025

Florida drinking water operator "B" Practice Questions & Answers 2024/2025 How much water is needed for a bac T sample? - ANSWER-100 ml What do low pH and iron bacteria in the water cause? - ANSWER-Red water problems Brackish water is considered to be between _____ and _____ Total Dissolved Solids (TDS) - ANSWER-1,000 - 10,000 TDS What is the MCL for the secondary standard for odor? - ANSWER-3 Threshold odor number (TON) What is the MCL for the secondary standard for sulfate? - ANSWER-250 mg/l What is the MCL for the secondary standard for manganese? - ANSWER-0.05 mg/l What is the MCL for the secondary standard for iron? - ANSWER-0.3 mg/l What is the maximum residual disinfectant level for chlorine? - ANSWER-4.0 mg/l What is the MCL for haloacetic acids (HAA5) - ANSWER-0.06 mg/l What is the MCL for TTHM's - ANSWER-0.08 A class "C" Conventional filtration plant treats how much water? - ANSWER-0.3 MGD up to 1.0 MGD A class "B" Conventional filtration plant treats how much water? - ANSWER-1.0 MGD up to 5.0 MGD A class "A" Conventional filtration plant treats how much water? - ANSWER-5 MGD and above Classify this plant: A real estate developer drills a well and provides the water to 17 homes in the development - ANSWER-Community water system Classify this plant: a farmer has a spring on his farm and provides drinking water to 16 of his neighbors for free - ANSWER-Community water system Classify this plant: A hospital with its own well and water treatment system - ANSWER-Nontransient Noncommunity What is the name of the upper thermal stratification layer? - ANSWER-Epilimnion What is the name of the middle thermal stratification layer - ANSWER-Metalimnion / Thermocline What is the name of the lower thermal stratification layer - ANSWER-Hypolimnion What are the causes of impurities in water? - ANSWER-Airborne contamination Animal wastes Decaying plant material Industrial discharge Land erosion What are the causes of surface water pollution? - ANSWER-Biological *bacteria and plankton Inorganic material *minerals Nature People Suspended and dissolved organics What diseases can be transmitted through water? - ANSWER-Cholera Dysentery Gastroenteritis Giardiasis Hepatitis Typhoid Why must sludge from a treatment plant using alum not be applied to agricultural land? Continues...