Page 1 of 91
Alberta Wastewater Treatment Operator Level 1 ACTUAL
EXAM QUESTIONS AND CORRECT VERIFIED SOLUTIONS LATEST
UPDATE THIS YEAR – JUST RELEASED
Alberta Wastewater Treatment Operator Level 1 Practice Exam
10-Line Exam Coverage
1. Operator Certification & Regulations – Alberta Environment and Parks (AEP)
certification program with 5 levels; EPEA legislation; Level 1 requires Grade 12, 1 year
experience, and mandatory entry-level training .
2. Safety & Confined Space – Workplace hazard identification, chemical handling, PPE,
confined space atmospheric testing (O₂, H₂S, LEL, CO), entry permits, and standby
personnel requirements .
3. Preliminary Treatment – Bar screens remove large debris, grit chambers protect pumps,
comminutors grind solids, flow measurement using Parshall flumes and weirs.
4. Primary Treatment – Clarifiers for settleable solids (50-70% TSS removal), detention time
(1-3 hours), surface overflow rate (600-1000 gpd/ft²), scum removal, sludge pumping.
5. Secondary Biological Treatment – Activated sludge process, trickling filters, RBCs;
microorganisms consume BOD; F/M ratio, MLSS, SRT, RAS, WAS, and settling
characteristics (SVI).
6. Disinfection – Chlorine (gas/hypochlorite) and UV light; CT concept (concentration ×
time); dechlorination; chlorine safety (heavier than air, leak detection with ammonia).
7. Sludge Handling – Gravity thickening, anaerobic digestion (methane production,
temperature 35°C, pH 6.8-7.5), VS reduction (40-55%), dewatering (drying beds, belt
presses).
8. Lagoons & Ponds – Facultative lagoons (aerobic top, anaerobic bottom, facultative
middle), detention time 20-40 days, algae for oxygenation, winter ice management.
9. Laboratory & Calculations – BOD5 (5-day, 20°C), TSS (filtration/drying), DO, pH, chlorine
residual (DPD method), coliform testing, and math formulas (lbs/day = mg/L × MGD ×
8.34).
, Page 2 of 91
10. Collection Systems – Gravity sewers (minimum velocity 2 ft/sec), manhole venting for
gas release (H₂S, methane), lift stations, force mains, preventive maintenance, CCTV
inspection .
200 MCQs with Rationales – Alberta Wastewater Treatment Operator Level 1
Section 1: Operator Certification & Regulations (Q 1-25)
1. Under Alberta's Environmental Protection and Enhancement Act (EPEA), who must be
certified to operate a wastewater treatment facility?
a) Any municipal employee
b) Certified operators only
c) Professional engineers only
d) The facility owner only
Correct Answer: b) Certified operators only
Rationale: The EPEA requires that specified water and wastewater facilities in Alberta have
certified operators to supervise or carry out day-to-day operations .
2. How many levels of certification exist in Alberta's Water and Wastewater Operator
Certification Program?
a) 3 levels
b) 4 levels
c) 5 levels
d) 6 levels
, Page 3 of 91
Correct Answer: c) 5 levels
Rationale: The program has five levels: Small Systems, Level I, Level II, Level III, and Level IV .
3. What are the minimum requirements for Level I wastewater operator certification in
Alberta?
a) Grade 10 and 6 months experience
b) Grade 12, 1 year experience, and mandatory entry-level training
c) Post-secondary degree only
d) No formal requirements
Correct Answer: b) Grade 12, 1 year experience, and mandatory entry-level training
Rationale: Level I certification requires a high school diploma, one year of related experience,
and successful completion of a training course and exam .
4. The Alberta Environment and Parks (AEP) Water and Wastewater Operator Certification
Program is primarily designed to:
a) License equipment manufacturers
b) Certify individuals to operate water and wastewater systems
c) Approve new treatment chemicals
d) Train municipal managers
, Page 4 of 91
Correct Answer: b) Certify individuals to operate water and wastewater systems
Rationale: The certification program ensures operators have the knowledge and skills to safely
and effectively operate water and wastewater systems .
5. What is the primary legislation governing wastewater operations in Alberta?
a) Canadian Environmental Protection Act
b) Environmental Protection and Enhancement Act (EPEA)
c) Fisheries Act
d) Municipal Government Act
Correct Answer: b) Environmental Protection and Enhancement Act (EPEA)
Rationale: The EPEA is the primary legislation governing environmental protection, including
wastewater operations in Alberta .
6. How often must a Water and Wastewater Operator Certificate of Qualification be renewed
in Alberta?
a) Annually
b) Every 2 years
c) Every 3 years
d) Every 5 years
Alberta Wastewater Treatment Operator Level 1 ACTUAL
EXAM QUESTIONS AND CORRECT VERIFIED SOLUTIONS LATEST
UPDATE THIS YEAR – JUST RELEASED
Alberta Wastewater Treatment Operator Level 1 Practice Exam
10-Line Exam Coverage
1. Operator Certification & Regulations – Alberta Environment and Parks (AEP)
certification program with 5 levels; EPEA legislation; Level 1 requires Grade 12, 1 year
experience, and mandatory entry-level training .
2. Safety & Confined Space – Workplace hazard identification, chemical handling, PPE,
confined space atmospheric testing (O₂, H₂S, LEL, CO), entry permits, and standby
personnel requirements .
3. Preliminary Treatment – Bar screens remove large debris, grit chambers protect pumps,
comminutors grind solids, flow measurement using Parshall flumes and weirs.
4. Primary Treatment – Clarifiers for settleable solids (50-70% TSS removal), detention time
(1-3 hours), surface overflow rate (600-1000 gpd/ft²), scum removal, sludge pumping.
5. Secondary Biological Treatment – Activated sludge process, trickling filters, RBCs;
microorganisms consume BOD; F/M ratio, MLSS, SRT, RAS, WAS, and settling
characteristics (SVI).
6. Disinfection – Chlorine (gas/hypochlorite) and UV light; CT concept (concentration ×
time); dechlorination; chlorine safety (heavier than air, leak detection with ammonia).
7. Sludge Handling – Gravity thickening, anaerobic digestion (methane production,
temperature 35°C, pH 6.8-7.5), VS reduction (40-55%), dewatering (drying beds, belt
presses).
8. Lagoons & Ponds – Facultative lagoons (aerobic top, anaerobic bottom, facultative
middle), detention time 20-40 days, algae for oxygenation, winter ice management.
9. Laboratory & Calculations – BOD5 (5-day, 20°C), TSS (filtration/drying), DO, pH, chlorine
residual (DPD method), coliform testing, and math formulas (lbs/day = mg/L × MGD ×
8.34).
, Page 2 of 91
10. Collection Systems – Gravity sewers (minimum velocity 2 ft/sec), manhole venting for
gas release (H₂S, methane), lift stations, force mains, preventive maintenance, CCTV
inspection .
200 MCQs with Rationales – Alberta Wastewater Treatment Operator Level 1
Section 1: Operator Certification & Regulations (Q 1-25)
1. Under Alberta's Environmental Protection and Enhancement Act (EPEA), who must be
certified to operate a wastewater treatment facility?
a) Any municipal employee
b) Certified operators only
c) Professional engineers only
d) The facility owner only
Correct Answer: b) Certified operators only
Rationale: The EPEA requires that specified water and wastewater facilities in Alberta have
certified operators to supervise or carry out day-to-day operations .
2. How many levels of certification exist in Alberta's Water and Wastewater Operator
Certification Program?
a) 3 levels
b) 4 levels
c) 5 levels
d) 6 levels
, Page 3 of 91
Correct Answer: c) 5 levels
Rationale: The program has five levels: Small Systems, Level I, Level II, Level III, and Level IV .
3. What are the minimum requirements for Level I wastewater operator certification in
Alberta?
a) Grade 10 and 6 months experience
b) Grade 12, 1 year experience, and mandatory entry-level training
c) Post-secondary degree only
d) No formal requirements
Correct Answer: b) Grade 12, 1 year experience, and mandatory entry-level training
Rationale: Level I certification requires a high school diploma, one year of related experience,
and successful completion of a training course and exam .
4. The Alberta Environment and Parks (AEP) Water and Wastewater Operator Certification
Program is primarily designed to:
a) License equipment manufacturers
b) Certify individuals to operate water and wastewater systems
c) Approve new treatment chemicals
d) Train municipal managers
, Page 4 of 91
Correct Answer: b) Certify individuals to operate water and wastewater systems
Rationale: The certification program ensures operators have the knowledge and skills to safely
and effectively operate water and wastewater systems .
5. What is the primary legislation governing wastewater operations in Alberta?
a) Canadian Environmental Protection Act
b) Environmental Protection and Enhancement Act (EPEA)
c) Fisheries Act
d) Municipal Government Act
Correct Answer: b) Environmental Protection and Enhancement Act (EPEA)
Rationale: The EPEA is the primary legislation governing environmental protection, including
wastewater operations in Alberta .
6. How often must a Water and Wastewater Operator Certificate of Qualification be renewed
in Alberta?
a) Annually
b) Every 2 years
c) Every 3 years
d) Every 5 years
