Which statement best describes a Tier 2 violation?

• A. A violation with potential serious but not immediate adverse health effects.
• B. A violation with significant potential for serious adverse health effects from short-term exposure.
• C. A violation with minor monitoring/testing issues.
• D. A violation that requires immediate plant shutdown.

Answer: (A)

This question tests how violations are categorized by public health significance in the Safe Drinking Water Act enforcement framework. Tier 2 violations describe conditions that could lead to serious adverse health effects, but the risk is not immediate. They signal a higher priority than minor issues but do not require the drastic action of an immediate shutdown.

The option describing a Tier 2 violation as involving potential serious health effects that are not immediate matches this intent exactly. The other descriptions fit different scenarios: a short-term exposure with serious risk suggests a more urgent, possibly immediate hazard; minor monitoring or testing issues reflect lower-severity problems; and a requirement to shut down the plant points to an imminent health hazard, not a non-immediate risk.