OSSF INSTALLER 1 EXAM 2025
QUESTIONS AND ANSWERS
In the hydrologic cycle, water moves by evaporation and transpiration into the -
ANS Atmosphere
evaporation where it comes in contact - ANS
Ground Water - ANS The term refers to water that collects beneath the surface of the earth
in porous, permeable, water-bearing geologic formations or aquifers.
Surface water - ANS refers to water that is found above ground in containment areas, such
as lakes, rivers, streams, creeks, and reservoirs.
Water table aquifers are recharged by - ANS Local percolation
Sepage pits - ANS
sepage pits - ANS Rock-filled or lined pits dug at least 4 feet deep at the end of a septic tank
absorption field system are called
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@COPYRIGHT SIRJOEL 2025/2026
, Cess pools - ANS Pits constructed in permeable soil with open-jointed material along the
sides to the bottom of the pit that receive a direct discharge of raw wastewater are called
How are waterborne diseases transmitted? - ANS Microorganisms (pathogens) that live in
the intestine are passed in the feces and get into the water supply
What are the three primary routes of contamination for pathogenic microorganisms and
harmful chemicals from on-site sewage systems to our environment? - ANS Neighborhood
pollution
Groundwater contamination
Surface water pollution
What problems are a result of neighborhood pollution? - ANS Diseases that can be spread by
direct or indirect contact with the standing wastewater.
Vectors, such as roaches and flies, that can also spread diseases after coming in contact with
the wastewater.
Unsightly and unpleasant living conditions that result from the standing wastewater and odors.
Feuds and bad relationships between neighbors that can result from the wastewater problems.
Property values drop and real estate transactions fall through. No one benefits and everyone
suffers when neighborhoods are fouled by wastewater.
Why is acceptable quality water vital? - ANS No resource in Texas or elsewhere is more
valuable than water. Acceptable quality water is not only vital in sustaining human life, but is
also vital in sustaining the natural environment and the economic life of Texas.
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Page
@COPYRIGHT SIRJOEL 2025/2026
QUESTIONS AND ANSWERS
In the hydrologic cycle, water moves by evaporation and transpiration into the -
ANS Atmosphere
evaporation where it comes in contact - ANS
Ground Water - ANS The term refers to water that collects beneath the surface of the earth
in porous, permeable, water-bearing geologic formations or aquifers.
Surface water - ANS refers to water that is found above ground in containment areas, such
as lakes, rivers, streams, creeks, and reservoirs.
Water table aquifers are recharged by - ANS Local percolation
Sepage pits - ANS
sepage pits - ANS Rock-filled or lined pits dug at least 4 feet deep at the end of a septic tank
absorption field system are called
1
Page
@COPYRIGHT SIRJOEL 2025/2026
, Cess pools - ANS Pits constructed in permeable soil with open-jointed material along the
sides to the bottom of the pit that receive a direct discharge of raw wastewater are called
How are waterborne diseases transmitted? - ANS Microorganisms (pathogens) that live in
the intestine are passed in the feces and get into the water supply
What are the three primary routes of contamination for pathogenic microorganisms and
harmful chemicals from on-site sewage systems to our environment? - ANS Neighborhood
pollution
Groundwater contamination
Surface water pollution
What problems are a result of neighborhood pollution? - ANS Diseases that can be spread by
direct or indirect contact with the standing wastewater.
Vectors, such as roaches and flies, that can also spread diseases after coming in contact with
the wastewater.
Unsightly and unpleasant living conditions that result from the standing wastewater and odors.
Feuds and bad relationships between neighbors that can result from the wastewater problems.
Property values drop and real estate transactions fall through. No one benefits and everyone
suffers when neighborhoods are fouled by wastewater.
Why is acceptable quality water vital? - ANS No resource in Texas or elsewhere is more
valuable than water. Acceptable quality water is not only vital in sustaining human life, but is
also vital in sustaining the natural environment and the economic life of Texas.
2
Page
@COPYRIGHT SIRJOEL 2025/2026
