OSSF INSTALLER 2 Exam
(updated 2026/2027) Questions
& Answers | Latest Already
Graded A+ UPDATE
The primary threat from malfunctioning OSSF systems is - ANSWER
✔✔water born disease
Wastewater disposal and OSSF systems are regulated in order to
protect - ANSWER ✔✔Public health and environment
A ______ is a disease-causing microorganism - ANSWER
✔✔Pathogen
,A groundwater chemical contaminant that can result from septic tanks
and leachfields is which can cause_____in infants - ANSWER
✔✔Nitrates and methoemoglobinmia
Statewide regulation of OSSF began in - ANSWER ✔✔1989 Sept
The state agency responsible for regulating OSSF is - ANSWER
✔✔TECQ
The desired method or level of OSSF regulation in Texas is
_______regulation - ANSWER ✔✔Local
pH measures whether wastewater is ______\or_________ -
ANSWER ✔✔Acidity Basicity
List six diseases that might be transmitted by inadequately treated
sewage . - ANSWER ✔✔Typhoid Paratyphoid Polio meningitis
Hepatitis Cholera
Identify the following terms TSS DO BOD - ANSWER ✔✔Total
Suspended solids
Dissolved Oxygen
Biochemical oxygen demand
, Identify the most common chemical elements of sewage - ANSWER
✔✔Solids
Gases
Fats and greases
DO
BOD
PH
What is the criteria that can be used to determine if a subsurface OSSF
system is functioning properly ? - ANSWER ✔✔The Plumbing system
must drain
No Water is surfacing or pooling above ground
There are no odors
The waste water must receive nearly complete treatment
List the soil treatment mechanisms important in treating wastewater -
ANSWER ✔✔filtering or straining
Adsorption
Biological
3
COPYRIGHT©JOSHCLAY 2026/2027. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
(updated 2026/2027) Questions
& Answers | Latest Already
Graded A+ UPDATE
The primary threat from malfunctioning OSSF systems is - ANSWER
✔✔water born disease
Wastewater disposal and OSSF systems are regulated in order to
protect - ANSWER ✔✔Public health and environment
A ______ is a disease-causing microorganism - ANSWER
✔✔Pathogen
,A groundwater chemical contaminant that can result from septic tanks
and leachfields is which can cause_____in infants - ANSWER
✔✔Nitrates and methoemoglobinmia
Statewide regulation of OSSF began in - ANSWER ✔✔1989 Sept
The state agency responsible for regulating OSSF is - ANSWER
✔✔TECQ
The desired method or level of OSSF regulation in Texas is
_______regulation - ANSWER ✔✔Local
pH measures whether wastewater is ______\or_________ -
ANSWER ✔✔Acidity Basicity
List six diseases that might be transmitted by inadequately treated
sewage . - ANSWER ✔✔Typhoid Paratyphoid Polio meningitis
Hepatitis Cholera
Identify the following terms TSS DO BOD - ANSWER ✔✔Total
Suspended solids
Dissolved Oxygen
Biochemical oxygen demand
, Identify the most common chemical elements of sewage - ANSWER
✔✔Solids
Gases
Fats and greases
DO
BOD
PH
What is the criteria that can be used to determine if a subsurface OSSF
system is functioning properly ? - ANSWER ✔✔The Plumbing system
must drain
No Water is surfacing or pooling above ground
There are no odors
The waste water must receive nearly complete treatment
List the soil treatment mechanisms important in treating wastewater -
ANSWER ✔✔filtering or straining
Adsorption
Biological
3
COPYRIGHT©JOSHCLAY 2026/2027. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
