Florida Class C Water Treatment Operator Exam — 200 Practice Questions with Verified Answers
& Rationales (2026 Q&A)
Table of Contents
| Topic | Questions |
|-------|-----------|
| Topic 1: Regulatory Framework & Licensing Requirements | 1–20 |
| Topic 2: Source Water Characteristics | 21–35 |
| Topic 3: Aeration & Gas Removal | 36–45 |
| Topic 4: Coagulation & Flocculation | 46–65 |
| Topic 5: Sedimentation/Clarification | 66–80 |
| Topic 6: Filtration | 81–100 |
| Topic 7: Disinfection — Chlorination, CT Values, Chloramines | 101–120 |
| Topic 8: Softening & Corrosion Control | 121–135 |
| Topic 9: Iron & Manganese Control | 136–145 |
| Topic 10: Pumps, Motors & Hydraulics | 146–165 |
| Topic 11: Valves, Piping & Distribution | 166–180 |
| Topic 12: Laboratory Testing, Sampling & Math | 181–195 |
| Topic 13: Safety & Security Procedures | 196–200 |
Topic 1: Regulatory Framework & Licensing Requirements (Questions 1–20)
1. What is the minimum educational requirement to apply for the Florida Class C Water
Treatment Operator exam?
,A) Associate's degree in environmental science
B) High school diploma or equivalent GED
C) Bachelor's degree in engineering
D) No formal education required
Answer: B
Rationale: The Florida Department of Environmental Protection (FDEP) requires candidates to
have either a high school diploma or a Florida Department of Education approved GED. Online
GEDs are not accepted by FDEP.
---
2. How many hours of verifiable water treatment plant experience are required before applying
for a Florida Class C license?
A) 1,040 hours (6 months)
B) 2,080 hours (1 year)
C) 3,120 hours (1.5 years)
D) 4,160 hours (2 years)
Answer: B
Rationale: The FDEP requires a minimum of 1 year (2,080 hours) of verifiable water treatment
plant experience before applying for a Class C license.
---
,3. What is the application fee for the Florida Class C Water Treatment Operator exam?
A) $25
B) $50
C) $75
D) $100
Answer: D
Rationale: Applicants for the treatment plant operator Class A, B, or C examination are required
to remit $100.
---
4. What is the minimum passing score required for the Florida Class C Water Treatment
Operator exam?
A) 60%
B) 65%
C) 70%
D) 75%
Answer: C
Rationale: In order to pass an examination, a minimum of 70% must be achieved.
---
5. How much time is allocated for the Florida Class C Water Treatment Operator exam?
, A) 1 hour
B) 2 hours
C) 3 hours
D) 4 hours
Answer: C
Rationale: The examination time allocated is three (3) hours for Class A, B, and C, with 100
questions.
---
6. How many questions are on the Florida Class C Water Treatment Operator exam?
A) 50
B) 75
C) 100
D) 150
Answer: C
Rationale: The examination time allocated is three (3) hours for Class A, B, and C, with 100
questions.
---
7. Which federal agency enforces the Safe Drinking Water Act (SDWA)?
& Rationales (2026 Q&A)
Table of Contents
| Topic | Questions |
|-------|-----------|
| Topic 1: Regulatory Framework & Licensing Requirements | 1–20 |
| Topic 2: Source Water Characteristics | 21–35 |
| Topic 3: Aeration & Gas Removal | 36–45 |
| Topic 4: Coagulation & Flocculation | 46–65 |
| Topic 5: Sedimentation/Clarification | 66–80 |
| Topic 6: Filtration | 81–100 |
| Topic 7: Disinfection — Chlorination, CT Values, Chloramines | 101–120 |
| Topic 8: Softening & Corrosion Control | 121–135 |
| Topic 9: Iron & Manganese Control | 136–145 |
| Topic 10: Pumps, Motors & Hydraulics | 146–165 |
| Topic 11: Valves, Piping & Distribution | 166–180 |
| Topic 12: Laboratory Testing, Sampling & Math | 181–195 |
| Topic 13: Safety & Security Procedures | 196–200 |
Topic 1: Regulatory Framework & Licensing Requirements (Questions 1–20)
1. What is the minimum educational requirement to apply for the Florida Class C Water
Treatment Operator exam?
,A) Associate's degree in environmental science
B) High school diploma or equivalent GED
C) Bachelor's degree in engineering
D) No formal education required
Answer: B
Rationale: The Florida Department of Environmental Protection (FDEP) requires candidates to
have either a high school diploma or a Florida Department of Education approved GED. Online
GEDs are not accepted by FDEP.
---
2. How many hours of verifiable water treatment plant experience are required before applying
for a Florida Class C license?
A) 1,040 hours (6 months)
B) 2,080 hours (1 year)
C) 3,120 hours (1.5 years)
D) 4,160 hours (2 years)
Answer: B
Rationale: The FDEP requires a minimum of 1 year (2,080 hours) of verifiable water treatment
plant experience before applying for a Class C license.
---
,3. What is the application fee for the Florida Class C Water Treatment Operator exam?
A) $25
B) $50
C) $75
D) $100
Answer: D
Rationale: Applicants for the treatment plant operator Class A, B, or C examination are required
to remit $100.
---
4. What is the minimum passing score required for the Florida Class C Water Treatment
Operator exam?
A) 60%
B) 65%
C) 70%
D) 75%
Answer: C
Rationale: In order to pass an examination, a minimum of 70% must be achieved.
---
5. How much time is allocated for the Florida Class C Water Treatment Operator exam?
, A) 1 hour
B) 2 hours
C) 3 hours
D) 4 hours
Answer: C
Rationale: The examination time allocated is three (3) hours for Class A, B, and C, with 100
questions.
---
6. How many questions are on the Florida Class C Water Treatment Operator exam?
A) 50
B) 75
C) 100
D) 150
Answer: C
Rationale: The examination time allocated is three (3) hours for Class A, B, and C, with 100
questions.
---
7. Which federal agency enforces the Safe Drinking Water Act (SDWA)?
