CWEA Collection Systems Maintenance Practice Test 2026 – The All-in-One Study Guide for Exam Success!

The correct answer is three days because it is a regulatory requirement for reporting certain types of Sanitary Sewer Overflows (SSOs). Categories 2 and 3 SSOs typically refer to more serious incidents that may pose a significant risk to public health and the environment, hence the need for timely reporting.

In the case of Category 2 SSOs, which may involve a discharge to surface waters or a significant potential to reach such waters, the agency responsible for the collection systems must notify the appropriate regulatory bodies within three days. Similarly, for Category 3 SSOs, which might not discharge directly to surface water but still carry notable concerns, the three-day notification period remains in effect. This prompt reporting helps ensure that the necessary actions can be taken to mitigate the potential impacts of the overflow. By adhering to the three-day reporting timeframe, agencies can take swift measures to protect community health and the environment effectively.