Wisconsin Lead Risk Assessor Practice Exam

Question: 1 / 400

What is the lead action level for drinking water?

5 ppb

10 ppb

15 ppb

The lead action level for drinking water is set at 15 parts per billion (ppb). This threshold is established by the Environmental Protection Agency (EPA) under the Lead and Copper Rule, which aims to protect public health by minimizing lead exposure from drinking water systems. When the concentration of lead in drinking water exceeds this action level, water suppliers are required to take specific actions to reduce lead levels, including corrosion control, public education, and replacement of lead service lines. Setting the action level at this point reflects an effort to safeguard vulnerable populations, particularly children, who are most at risk from the harmful effects of lead exposure.

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20 ppb

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