Florida Drinking Water Operator "B" Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

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!

Practice this question and more.

What is the Maximum Contaminant Level (MCL) for Total Trihalomethanes (TTHM's)?

0.05 mg/l
0.06 mg/l
0.08 mg/l
0.10 mg/l

The correct answer is: 0.08 mg/l

The Maximum Contaminant Level (MCL) for Total Trihalomethanes (TTHMs) is set at 0.08 mg/l. TTHMs are a group of volatile organic chemicals that are formed as a byproduct of the disinfection process in drinking water treatment when chlorine reacts with naturally occurring organic matter. Due to their potential health risks, including risks of cancer and effects on the liver, kidneys, and central nervous system, the Environmental Protection Agency (EPA) has established this limit to regulate their presence in drinking water and to protect public health. Setting the MCL at 0.08 mg/l reflects a balance between the safety of drinking water and the practical capabilities of water treatment facilities to remove contaminants while maintaining effective disinfection processes. Understanding this standard is crucial for water operators, as they must monitor TTHM levels continuously and implement appropriate treatment methods to ensure compliance with regulatory requirements.