CDPH Lead Inspector/Assessor California State Practice Exam

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What is the EPA action level for lead in drinking water?

  1. 10 ppb (10 μg/L)

  2. 15 ppb (15 μg/L)

  3. 20 ppb (20 μg/L)

  4. 25 ppb (25 μg/L)

The correct answer is: 15 ppb (15 μg/L)

The EPA action level for lead in drinking water is 15 parts per billion (ppb), which is equivalent to 15 micrograms per liter (μg/L). This standard was established to protect public health, particularly for vulnerable populations such as children and pregnant women. When the concentration of lead in drinking water exceeds this action level, water systems are required to take specific measures to reduce lead levels and inform the public about potential health risks. The importance of this action level lies in its role in preventing lead exposure, which can result in serious health effects, including developmental delays in children and various health issues in adults.

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