TCEQ Exam Study Guide Latest Update 2026 | Practice
Questions | Pass Exam Prep
1. Where piping is sleeved through a foundation, the minimum annular space of
the sleeve shall be
1 inch
2 pipe sizes larger
2 inches
1 pipe size larger
2. If the TCEQ were to prioritize water quality over waste management, what
implications might this have for irrigation practices in Texas?
Irrigation practices would need to incorporate stricter regulations
to prevent contamination of water sources.
Irrigation practices would become less regulated and more lenient.
Irrigation practices would focus solely on efficiency without regard for
water quality.
Irrigation practices would not be affected at all.
3. The infiltration of water is greatest in
clay soil.
silica-cemented sandstone.
sandy soil.
calcite-cemented sandstone.
4. For a given nominal pipe size, as the wall thickness of the pipe increases, the:
, Inside diameter is reduced
Bore of the pipe increases
Outside diameter increases
Weight of the pipe decreases
5. What is the typical relationship between precipitation rates from spray heads
and infiltration rates in tight soils?
There is no relationship between precipitation rates and infiltration
rates in tight soils.
Precipitation rates from most spray heads match infiltration rates in
tight soils.
Precipitation rates from most spray heads exceed infiltration rates in
tight soils.
Infiltration rates in tight soils exceed precipitation rates from most
spray heads.
6. What term describes the pressure on the outlet side of a backflow prevention
device that exceeds the inlet side pressure?
Pressure differential
Supply pressure
Backpressure
Backflow
7. What is the recommended adjustment to head spacing in irrigation systems
as wind speed increases?
Head spacing should decrease.
Head spacing should increase.
, Head spacing should remain the same.
Head spacing should be eliminated.
8. Landscape irrigation systems are comprised of which of the following?
Timers
Landscape irrigation systems are comprised of all of these
Sprinkler heads
Valves
9. What is the primary method used to prevent clogging of emitters in an
irrigation system?
Filtration
Aeration
Fertilization
Irrigation scheduling
10. During prolonged flood irrigation, water infiltration rates:
are typically higher in sandy soils than in clay soils because the
saturated hydraulic conductivity is highest in sands
are typically lower in sandy soils than in clay soils because the
saturated hydraulic conductivity is highest in sands
are typically higher in sandy soils than in clay soils because the
saturated hydraulic conductivity is lowest in sands
are typically lower in sandy soils than in clay soils because the
saturated hydraulic conductivity is lowest in sands
, 11. What document outlines the requirements for licensed irrigators regarding
the provision of irrigation system designs to homeowners?
Texas Commission on Environmental Quality Guidelines
Homeowner's Guide to Irrigation
Rules and Regulations for Licensed Irrigators
Irrigation System Design Manual
12. If an irrigator fails to renew their license before it expires, what potential
consequences might they face?
They will be fined but can still practice.
They can continue working without any issues.
They may be unable to legally practice irrigation.
They will automatically receive a grace period.
13. In designing an irrigation system, how would the use of F.I.P.T affect the
selection of components?
It would dictate the water source for the irrigation system.
It would set the maximum allowable pressure for the system.
It would determine the compatibility of fittings and pipes used in
the system.
It would influence the type of plants that can be irrigated.
14. Which backflow prevention device provides the most protection?
Back pressure device
Double check valve
Questions | Pass Exam Prep
1. Where piping is sleeved through a foundation, the minimum annular space of
the sleeve shall be
1 inch
2 pipe sizes larger
2 inches
1 pipe size larger
2. If the TCEQ were to prioritize water quality over waste management, what
implications might this have for irrigation practices in Texas?
Irrigation practices would need to incorporate stricter regulations
to prevent contamination of water sources.
Irrigation practices would become less regulated and more lenient.
Irrigation practices would focus solely on efficiency without regard for
water quality.
Irrigation practices would not be affected at all.
3. The infiltration of water is greatest in
clay soil.
silica-cemented sandstone.
sandy soil.
calcite-cemented sandstone.
4. For a given nominal pipe size, as the wall thickness of the pipe increases, the:
, Inside diameter is reduced
Bore of the pipe increases
Outside diameter increases
Weight of the pipe decreases
5. What is the typical relationship between precipitation rates from spray heads
and infiltration rates in tight soils?
There is no relationship between precipitation rates and infiltration
rates in tight soils.
Precipitation rates from most spray heads match infiltration rates in
tight soils.
Precipitation rates from most spray heads exceed infiltration rates in
tight soils.
Infiltration rates in tight soils exceed precipitation rates from most
spray heads.
6. What term describes the pressure on the outlet side of a backflow prevention
device that exceeds the inlet side pressure?
Pressure differential
Supply pressure
Backpressure
Backflow
7. What is the recommended adjustment to head spacing in irrigation systems
as wind speed increases?
Head spacing should decrease.
Head spacing should increase.
, Head spacing should remain the same.
Head spacing should be eliminated.
8. Landscape irrigation systems are comprised of which of the following?
Timers
Landscape irrigation systems are comprised of all of these
Sprinkler heads
Valves
9. What is the primary method used to prevent clogging of emitters in an
irrigation system?
Filtration
Aeration
Fertilization
Irrigation scheduling
10. During prolonged flood irrigation, water infiltration rates:
are typically higher in sandy soils than in clay soils because the
saturated hydraulic conductivity is highest in sands
are typically lower in sandy soils than in clay soils because the
saturated hydraulic conductivity is highest in sands
are typically higher in sandy soils than in clay soils because the
saturated hydraulic conductivity is lowest in sands
are typically lower in sandy soils than in clay soils because the
saturated hydraulic conductivity is lowest in sands
, 11. What document outlines the requirements for licensed irrigators regarding
the provision of irrigation system designs to homeowners?
Texas Commission on Environmental Quality Guidelines
Homeowner's Guide to Irrigation
Rules and Regulations for Licensed Irrigators
Irrigation System Design Manual
12. If an irrigator fails to renew their license before it expires, what potential
consequences might they face?
They will be fined but can still practice.
They can continue working without any issues.
They may be unable to legally practice irrigation.
They will automatically receive a grace period.
13. In designing an irrigation system, how would the use of F.I.P.T affect the
selection of components?
It would dictate the water source for the irrigation system.
It would set the maximum allowable pressure for the system.
It would determine the compatibility of fittings and pipes used in
the system.
It would influence the type of plants that can be irrigated.
14. Which backflow prevention device provides the most protection?
Back pressure device
Double check valve
