Florida Drinking Water Operator "B" Practice Test

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Study for the Florida Drinking Water Operator "B" Test. Use multiple choice questions, flashcards, and explanations to prepare. Ace your certification!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the Maximum Contaminant Level (MCL) for haloacetic acids (HAA5)?

0.02 mg/l
0.04 mg/l
0.06 mg/l
0.08 mg/l

The correct answer is: 0.06 mg/l

The Maximum Contaminant Level (MCL) for haloacetic acids (HAA5) is set at 0.060 mg/l. This regulatory limit is established to protect public health by controlling the levels of these disinfection byproducts, which can form when chlorine or other disinfectants react with organic matter in water. HAA5 includes five specific haloacetic acids that have been identified as potential health risks, including dichloroacetic acid and trichloroacetic acid. Monitoring and regulating HAA5 levels is critical because exposure to high concentrations of these substances over time has been associated with an increased risk of adverse health effects, such as various cancers. The MCL is a legally enforceable standard, underscoring the importance of ensuring water supply systems maintain HAA5 concentrations below this threshold to safeguard consumers. In a broader context, MCLs for various contaminants help ensure the safety and quality of drinking water, making it essential for water operators to be familiar with these limits as part of their responsibility in water treatment and distribution.