1|Page
OSSF DR Exam 2025 Preparation Guide
With 200 Questions and Correct Answers |
Designated Representative Test Latest
Practice WITH QUESTIONS AND WELL
VERIFIED ANSWERS [ALREADY
GRADED A+]
What are key elements of Texas OSSF rules? -ANSWER-.....-They
can produce no more than 5,000 gallons a day
-They are used on for the sewage that is produce on the site where
the system is located (can't divert other sewage into an OSSF)
-They must dispose of wastewater on site into the soil or as vapor
into the atmosphere
Can homeowners install their own OSSF? -ANSWER-.....Yes, but
they must meet all the requirements (submitting planning
material, obtaining permits, etc)
,2|Page
Important that they have a licensed individual to be there for an
inspection
Can a DR preform OSSF duties outside of their authorized agent
regulatory jurisdiction? -ANSWER-.....Only with written
permission from DR's employer.
Can a contractor prepare in submit a permitting application and
planning materials for an OSSF? -ANSWER-.....No. It must be
submitted in the name of the property owner.
What is the ten acre rule? -ANSWER-.....No planning materials,
permit, or inspection is required for an OSSF for a single family
dwelling on land larger than 10 acres. However, local jurisdictions
have to allow this. Furthermore the following criteria must be met;
the OSSF must not be causing a nuisance or pollution, all OSSF
parts must be 100 ft from property line, the effluent must be
disposed of on the property, and there must only be one dwelling
on the tract of land.
,3|Page
OSHA requires that excavations over 5ft must be
-ANSWER-.....sloped/supported. If soil conditions are unstable,
they will have to be sloped/supported at less than 5 ft.
Confined Spaces -ANSWER-.....-often fatal and should be avoided
They have the following characteristics-
-large enough that an employee can enter and work, but not
designed for continued work
-limited entries and exits
-often hazardous (oxygen defecient, flammable, toxic)
Pathogens -ANSWER-.....Disease causing microorganisms
-all over wastewater different
types are:
-viruses (up to 100x smaller than bacteria)
-bacteria (single cell)
, 4|Page
-protozoa (simple animal microorganisms)
-helminths (worms)
What is one of the most common and harmful chemicals in
drinking water? -ANSWER-.....Nitrates. They cause
methemoglbinemia (blue baby syndrom)
Fresh domestic wastewater -ANSWER-.....-light dishwater color
-slight fecal odor
-visible floating and suspended solids
-DISSOLVED OXYGEN IS PRESENT
Septic wastewater -ANSWER-.....-dark gray to black color
-strong shit odor
-can't see solids
-gas bubbles
-NO DISSOLVED OXYGEN
OSSF DR Exam 2025 Preparation Guide
With 200 Questions and Correct Answers |
Designated Representative Test Latest
Practice WITH QUESTIONS AND WELL
VERIFIED ANSWERS [ALREADY
GRADED A+]
What are key elements of Texas OSSF rules? -ANSWER-.....-They
can produce no more than 5,000 gallons a day
-They are used on for the sewage that is produce on the site where
the system is located (can't divert other sewage into an OSSF)
-They must dispose of wastewater on site into the soil or as vapor
into the atmosphere
Can homeowners install their own OSSF? -ANSWER-.....Yes, but
they must meet all the requirements (submitting planning
material, obtaining permits, etc)
,2|Page
Important that they have a licensed individual to be there for an
inspection
Can a DR preform OSSF duties outside of their authorized agent
regulatory jurisdiction? -ANSWER-.....Only with written
permission from DR's employer.
Can a contractor prepare in submit a permitting application and
planning materials for an OSSF? -ANSWER-.....No. It must be
submitted in the name of the property owner.
What is the ten acre rule? -ANSWER-.....No planning materials,
permit, or inspection is required for an OSSF for a single family
dwelling on land larger than 10 acres. However, local jurisdictions
have to allow this. Furthermore the following criteria must be met;
the OSSF must not be causing a nuisance or pollution, all OSSF
parts must be 100 ft from property line, the effluent must be
disposed of on the property, and there must only be one dwelling
on the tract of land.
,3|Page
OSHA requires that excavations over 5ft must be
-ANSWER-.....sloped/supported. If soil conditions are unstable,
they will have to be sloped/supported at less than 5 ft.
Confined Spaces -ANSWER-.....-often fatal and should be avoided
They have the following characteristics-
-large enough that an employee can enter and work, but not
designed for continued work
-limited entries and exits
-often hazardous (oxygen defecient, flammable, toxic)
Pathogens -ANSWER-.....Disease causing microorganisms
-all over wastewater different
types are:
-viruses (up to 100x smaller than bacteria)
-bacteria (single cell)
, 4|Page
-protozoa (simple animal microorganisms)
-helminths (worms)
What is one of the most common and harmful chemicals in
drinking water? -ANSWER-.....Nitrates. They cause
methemoglbinemia (blue baby syndrom)
Fresh domestic wastewater -ANSWER-.....-light dishwater color
-slight fecal odor
-visible floating and suspended solids
-DISSOLVED OXYGEN IS PRESENT
Septic wastewater -ANSWER-.....-dark gray to black color
-strong shit odor
-can't see solids
-gas bubbles
-NO DISSOLVED OXYGEN
