OSSF INSTALLER 2 License
Comprehensive Resource To Help You Ace
2026-2027 Includes Frequently Tested
Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. The primary threat from malfunctioning OSSF systems is:
A. Structural damage
B. Soil erosion
C. Waterborne disease
D. Air pollution
Correct Answer: C. Waterborne disease
2. Wastewater disposal and OSSF systems are regulated primarily to protect:
A. Property values
B. Surface aesthetics
C. Public health and the environment
D. Construction standards
Correct Answer: C. Public health and the environment
3. A disease-causing microorganism is called a:
A. Vector
B. Pathogen
,C. Parasite
D. Toxin
Correct Answer: B. Pathogen
4. A groundwater chemical contaminant commonly associated with septic
systems that can cause illness in infants is:
A. Phosphates causing rickets
B. Nitrates causing methemoglobinemia
C. Chlorides causing dehydration
D. Sulfates causing diarrhea
Correct Answer: B. Nitrates causing methemoglobinemia
5. Statewide regulation of OSSF systems in Texas began in:
A. 1985
B. 1987
C. September 1989
D. 1997
Correct Answer: C. September 1989
6. The state agency responsible for regulating OSSF systems is:
A. EPA
B. TDH
C. TCEQ
D. USDA
Correct Answer: C. TCEQ
,7. The desired level of OSSF regulation in Texas is:
A. Federal regulation
B. State regulation
C. Local regulation
D. Private regulation
Correct Answer: C. Local regulation
8. pH measures whether wastewater is:
A. Hot or cold
B. Turbid or clear
C. Acidic or basic
D. Aerobic or anaerobic
Correct Answer: C. Acidic or basic
9. Which of the following diseases may be transmitted by inadequately treated
sewage?
(Select all that apply)
• Typhoid
• Paratyphoid
• Polio
• Meningitis
• Hepatitis
• Cholera
Correct Answer: All of the above
, 10. Identify the following wastewater terms:
• TSS: Total Suspended Solids
• DO: Dissolved Oxygen
• BOD: Biochemical Oxygen Demand
11. The most common chemical components of sewage include:
A. Metals and salts
B. Solids, gases, fats and greases
C. Dissolved oxygen, BOD, and pH
D. All of the above
Correct Answer: D. All of the above
12. Which criteria indicate a properly functioning subsurface OSSF system?
• Plumbing drains properly
• No surfacing or pooling of wastewater
• No objectionable odors
• Wastewater receives nearly complete treatment
Correct Answer: All of the above
13. Soil treatment mechanisms important in wastewater treatment include:
A. Filtration (straining)
B. Adsorption
C. Biological activity
D. All of the above
Correct Answer: D. All of the above
Comprehensive Resource To Help You Ace
2026-2027 Includes Frequently Tested
Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. The primary threat from malfunctioning OSSF systems is:
A. Structural damage
B. Soil erosion
C. Waterborne disease
D. Air pollution
Correct Answer: C. Waterborne disease
2. Wastewater disposal and OSSF systems are regulated primarily to protect:
A. Property values
B. Surface aesthetics
C. Public health and the environment
D. Construction standards
Correct Answer: C. Public health and the environment
3. A disease-causing microorganism is called a:
A. Vector
B. Pathogen
,C. Parasite
D. Toxin
Correct Answer: B. Pathogen
4. A groundwater chemical contaminant commonly associated with septic
systems that can cause illness in infants is:
A. Phosphates causing rickets
B. Nitrates causing methemoglobinemia
C. Chlorides causing dehydration
D. Sulfates causing diarrhea
Correct Answer: B. Nitrates causing methemoglobinemia
5. Statewide regulation of OSSF systems in Texas began in:
A. 1985
B. 1987
C. September 1989
D. 1997
Correct Answer: C. September 1989
6. The state agency responsible for regulating OSSF systems is:
A. EPA
B. TDH
C. TCEQ
D. USDA
Correct Answer: C. TCEQ
,7. The desired level of OSSF regulation in Texas is:
A. Federal regulation
B. State regulation
C. Local regulation
D. Private regulation
Correct Answer: C. Local regulation
8. pH measures whether wastewater is:
A. Hot or cold
B. Turbid or clear
C. Acidic or basic
D. Aerobic or anaerobic
Correct Answer: C. Acidic or basic
9. Which of the following diseases may be transmitted by inadequately treated
sewage?
(Select all that apply)
• Typhoid
• Paratyphoid
• Polio
• Meningitis
• Hepatitis
• Cholera
Correct Answer: All of the above
, 10. Identify the following wastewater terms:
• TSS: Total Suspended Solids
• DO: Dissolved Oxygen
• BOD: Biochemical Oxygen Demand
11. The most common chemical components of sewage include:
A. Metals and salts
B. Solids, gases, fats and greases
C. Dissolved oxygen, BOD, and pH
D. All of the above
Correct Answer: D. All of the above
12. Which criteria indicate a properly functioning subsurface OSSF system?
• Plumbing drains properly
• No surfacing or pooling of wastewater
• No objectionable odors
• Wastewater receives nearly complete treatment
Correct Answer: All of the above
13. Soil treatment mechanisms important in wastewater treatment include:
A. Filtration (straining)
B. Adsorption
C. Biological activity
D. All of the above
Correct Answer: D. All of the above
