Wastewater Operator Certification Exam: Practice Test & Study Guide

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WASTEWATER TEST (FLORIDA) NEWEST 2025

COMPLETE EXAM| 200 REAL EXAM QUESTIONS AND

VERIFIED ANSWERS (100% CORRECT) ALREADY

GRADED A+| NEW!!

According to FDEP chapter 62-600.440 (4) (b) FAC, basic level

disinfection is described as: .....ANSWER..... A chlorine residual of

0.5 mg/L for 15 minutes at peak hourly flow

FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill

shall be verbally reported to the state warning point no later

than: .....ANSWER..... 24hrs from discovery

What is the 'rule of thumb' regarding pump packing?

.....ANSWER..... Never put rings of new packing over the old

packing

According to FDEP chapter 62-60, FAC, a composite sample shall

be used for which test? .....ANSWER..... Effluent CBOD

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Chlorine residual can be measured in several ways, including the

use of DPD reagent, spectrophotometers and iodometric titration.

Which of the following is also an approved method?

.....ANSWER..... Amperometric Titration

Chapter 62-601, Domestic wastewater treatment plant

monitoring, states that on-site tests for total residual chlorine, pH,

and _______ can be performed under the direction of a

certified operator: .....ANSWER..... Dissolved Oxygen(DO)

Starting this type of pump against a closed valve can cause

major damage to the pump, pump piping, the operator, or all

three .....ANSWER..... Positive displacement pump

These types of samples may be used for CBOD5 and nutrients at

flows less than 100,000 GPD, according to chapter 62-601

.....ANSWER..... Grab samples

According to FDEP chapter 62-602, drinking water and

wastewater treatment plant operators, duties of operators

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includes reporting to the permittee and the department, as soon

as possible, but within 24hrs: .....ANSWER..... Any major

interruption of service

What could cause a centrifugal above ground pump to be noisy

while running .....ANSWER..... Debris caught in the impeller

housing

According to FDEP chapter 62-601 FAC, Domestic wastewater

treatment plant monitoring, discharge monitoring reports (DMRs)

for the previous month must be submitted to the department by

the ____________ day of the current month? .....ANSWER.....

28th day

FDEP chapter 62-600 FC, domestic wastewater facilities, states

that all treatment plants shall be____________ .....ANSWER.....

Fenced

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As the operator of a primary clarifier, you notice a black and

odorous septic wastewater leaving the clarifier. What is the

probable cause? .....ANSWER..... Improper sludge removal

A fire has started in the maintenance shop due to an ignition of

petroleum oil. Which type of fire extinguisher should NOT be

used to fight the fire? .....ANSWER..... Pressurized water

Chlorine gas is how many times heavier than air .....ANSWER.....

2.5

The combination of methane and ____________ can be very

combustible .....ANSWER..... Oxygen

Plant effluent coliform count fails to meet the required standards

for disinfection. Chlorine residual is normal. Disinfectant supplies

ARE NOT a problem. What is the probable cause?

.....ANSWER..... Contact time too short

A fixed sample is: .....ANSWER..... A sample purposely spiked by

the lab technician for QA/QC