The chlorine level test must be recorded in the sewage treatment plan maintenance log books.

• A. True
• B. False
• C. Only when chlorine levels exceed limits
• D. It is optional

Answer: (B)

Understanding how records are organized helps you see why this statement isn’t necessarily true. In a wastewater treatment setup, the maintenance log is meant to document tasks that keep equipment and systems in good working order—things like routine servicing, calibration of meters, parts replacement, and repairs. It is about the status and history of the equipment itself.

Chlorine level testing, on the other hand, is part of process control and water quality monitoring. The results of those tests—chlorine residuals, dosing adjustments, and related operational data—are typically recorded in a process control log or chemical dosing/quality records. This separation keeps the equipment’s maintenance history distinct from the day-to-day performance data of the treatment process.

So, while chlorine testing is essential and its results must be recorded somewhere, they are not generally required to be entered in the sewage treatment plan maintenance log. If a test indicates a problem, that issue may prompt maintenance actions, and those actions would then be logged in the maintenance record, but the test results themselves belong in the process control records.