Florida Drinking Water Operator "B"
Study Guide 2024/2025 Exam Questions
and Correct Answers | New Update
How much water is needed for a bac T sample? - 🧠ANSWER ✔✔100 ml
What do low pH and iron bacteria in the water cause? - 🧠ANSWER
✔✔Red water problems
Brackish water is concidered to be between _____ and _____ Total
Dissolved Solids (TDS) - 🧠ANSWER ✔✔1,000 - 10,000 TDS
What is the MCL for the secondary standard for odor? - 🧠ANSWER ✔✔3
Threshold odor number (TON)
What is the MCL for the secondary standard for sulfate? - 🧠ANSWER
✔✔250 mg/l
What is the MCL for the secondary standard for manganese? - 🧠ANSWER
✔✔0.05 mg/l
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,What is the MCL for the secondary standard for iron? - 🧠ANSWER ✔✔0.3
mg/l
What is the maximum residual disinfectant level for chlorine? - 🧠ANSWER
✔✔4.0 mg/l
What is the MCL for haloacetic acids (HAA5) - 🧠ANSWER ✔✔0.06 mg/l
What is the MCL for TTHM's - 🧠ANSWER ✔✔0.08
A class "C" Conventional filtration plant treats how much water? -
🧠ANSWER ✔✔0.3 MGD up to 1.0 MGD
A class "B" Conventional filtration plant treats how much water? -
🧠ANSWER ✔✔1.0 MGD up to 5.0 MGD
A class "A" Conventional filtration plant treats how much water? -
🧠ANSWER ✔✔5 MGD and above
Classify this plant:
A real estate developer drills a well and provides the water to 17 homes in
the development - 🧠ANSWER ✔✔Community water system
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
, Classify this plant:
a farmer has a spring on his farm and provides drinking water to 16 of his
neighbors for free - 🧠ANSWER ✔✔Community water system
Classify this plant:
A hospital with its own well and water treatment system - 🧠ANSWER
✔✔Nontransient Noncommunity
What is the name of the upper thermal stratification layer? - 🧠ANSWER
✔✔Epilimnion
What is the name of the middle thermal stratification layer - 🧠ANSWER
✔✔Metalimnion / Thermocline
What is the name of the lower thermal stratification layer - 🧠ANSWER
✔✔Hypolimnion
What are the causes of impuritites in water? - 🧠ANSWER ✔✔Airborne
contamination
Animal wastes
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
Study Guide 2024/2025 Exam Questions
and Correct Answers | New Update
How much water is needed for a bac T sample? - 🧠ANSWER ✔✔100 ml
What do low pH and iron bacteria in the water cause? - 🧠ANSWER
✔✔Red water problems
Brackish water is concidered to be between _____ and _____ Total
Dissolved Solids (TDS) - 🧠ANSWER ✔✔1,000 - 10,000 TDS
What is the MCL for the secondary standard for odor? - 🧠ANSWER ✔✔3
Threshold odor number (TON)
What is the MCL for the secondary standard for sulfate? - 🧠ANSWER
✔✔250 mg/l
What is the MCL for the secondary standard for manganese? - 🧠ANSWER
✔✔0.05 mg/l
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,What is the MCL for the secondary standard for iron? - 🧠ANSWER ✔✔0.3
mg/l
What is the maximum residual disinfectant level for chlorine? - 🧠ANSWER
✔✔4.0 mg/l
What is the MCL for haloacetic acids (HAA5) - 🧠ANSWER ✔✔0.06 mg/l
What is the MCL for TTHM's - 🧠ANSWER ✔✔0.08
A class "C" Conventional filtration plant treats how much water? -
🧠ANSWER ✔✔0.3 MGD up to 1.0 MGD
A class "B" Conventional filtration plant treats how much water? -
🧠ANSWER ✔✔1.0 MGD up to 5.0 MGD
A class "A" Conventional filtration plant treats how much water? -
🧠ANSWER ✔✔5 MGD and above
Classify this plant:
A real estate developer drills a well and provides the water to 17 homes in
the development - 🧠ANSWER ✔✔Community water system
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
, Classify this plant:
a farmer has a spring on his farm and provides drinking water to 16 of his
neighbors for free - 🧠ANSWER ✔✔Community water system
Classify this plant:
A hospital with its own well and water treatment system - 🧠ANSWER
✔✔Nontransient Noncommunity
What is the name of the upper thermal stratification layer? - 🧠ANSWER
✔✔Epilimnion
What is the name of the middle thermal stratification layer - 🧠ANSWER
✔✔Metalimnion / Thermocline
What is the name of the lower thermal stratification layer - 🧠ANSWER
✔✔Hypolimnion
What are the causes of impuritites in water? - 🧠ANSWER ✔✔Airborne
contamination
Animal wastes
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
