Texas Class D Water License (NEW)
2025 Retake Questions And Correct
Answers | Already Passed!!
Ground storage at a surface water treatment receiving the treated water is called the? -
Answers -✔✔ clear well
The TCEQ requires all storage tanks to have screened vents, licked hatches, a dust-
proof cover, overflows with hinged flaps, and - Answers -✔✔ entry ports
Total storage capacity (elevated storage included) must be how many gallons? -
Answers -✔✔ 200
Storage tanks must be painted, disinfected, and maintained according to what
standards? - Answers -✔✔ AWWA
Coatings on storage tanks for contact with potable water must be approved by? -
Answers -✔✔ EPA
Each foot of a water column produces how much psi? - Answers -✔✔ 0.433
What is the state minimum normal operating pressure? - Answers -✔✔ 35 psi
Elevated storage is water stored at least how many feet above the highest service
connection? - Answers -✔✔ 80
A ? is a tank resting on the ground that is greater in height than diameter? - Answers -
✔✔ standpipe
What kind of tank also known as (hydropneumatic tanks) are cylindrical and horizontal
to the ground. - Answers -✔✔ pressure tanks
Annual inspections on tanks must be inspected how often? - Answers -✔✔ yearly
Cathodic protection is an ? method for preventing corrosion of the interior of metal
tanks? - Answers -✔✔ electrochemical
The TCEQ requires distribution system pressure to never fall below ? psi. - Answers -
✔✔ 20
, Under normal operating conditions, the distribution pressure must be at least ? psi. -
Answers -✔✔ 35
Storage facilities ? demand on the water supply? - Answers -✔✔ equalize
Storage allows uniform pump rates, supplies water for fire fighting, and provides time for
? - Answers -✔✔ disenfection
Ground storage at a surface water treatment plant is called a ? - Answers -✔✔ clear
well
The TCEQ requires storage tanks to have covered vents, locked hatches, a dust-proof
cover, overflows with hinged flaps, and ? - Answers -✔✔ entry ports
If a 30-inch diameter access opening is not provided in a storage tank, the primary roof
access must not be less than ? inches. - Answers -✔✔ 30
No paint, coating, or wax containing ? is allowed. - Answers -✔✔ lead
Coatings for contact with potable water must be approved by ? , the National Sanitation
Foundation, or the Food and Drug Administration. - Answers -✔✔ EPA
An elevated storage tank is usually ? supported above ground on a tower. - Answers -
✔✔ steel
Pressure from an elevated tank is maintained by the ? of the water column. - Answers -
✔✔ height
A ? is a tank resting on the ground that is greater in height than diameter. - Answers -
✔✔ standpipe
Storage tank inspection results must be kept at least ? years. - Answers -✔✔ 5
Chain link fence material must leave a gap at the ? trim grass. - Answers -✔✔ ground
The state requires stored water to have a disinfectant ? - Answers -✔✔ residual
After construction or maintenance of storage tank, a ? sample must be taken after filing
the tank. - Answers -✔✔ bacteriological
If the bacteriological sample is negative, more samples must be taken until ?
consecutive samples are positive. - Answers -✔✔ 2
2025 Retake Questions And Correct
Answers | Already Passed!!
Ground storage at a surface water treatment receiving the treated water is called the? -
Answers -✔✔ clear well
The TCEQ requires all storage tanks to have screened vents, licked hatches, a dust-
proof cover, overflows with hinged flaps, and - Answers -✔✔ entry ports
Total storage capacity (elevated storage included) must be how many gallons? -
Answers -✔✔ 200
Storage tanks must be painted, disinfected, and maintained according to what
standards? - Answers -✔✔ AWWA
Coatings on storage tanks for contact with potable water must be approved by? -
Answers -✔✔ EPA
Each foot of a water column produces how much psi? - Answers -✔✔ 0.433
What is the state minimum normal operating pressure? - Answers -✔✔ 35 psi
Elevated storage is water stored at least how many feet above the highest service
connection? - Answers -✔✔ 80
A ? is a tank resting on the ground that is greater in height than diameter? - Answers -
✔✔ standpipe
What kind of tank also known as (hydropneumatic tanks) are cylindrical and horizontal
to the ground. - Answers -✔✔ pressure tanks
Annual inspections on tanks must be inspected how often? - Answers -✔✔ yearly
Cathodic protection is an ? method for preventing corrosion of the interior of metal
tanks? - Answers -✔✔ electrochemical
The TCEQ requires distribution system pressure to never fall below ? psi. - Answers -
✔✔ 20
, Under normal operating conditions, the distribution pressure must be at least ? psi. -
Answers -✔✔ 35
Storage facilities ? demand on the water supply? - Answers -✔✔ equalize
Storage allows uniform pump rates, supplies water for fire fighting, and provides time for
? - Answers -✔✔ disenfection
Ground storage at a surface water treatment plant is called a ? - Answers -✔✔ clear
well
The TCEQ requires storage tanks to have covered vents, locked hatches, a dust-proof
cover, overflows with hinged flaps, and ? - Answers -✔✔ entry ports
If a 30-inch diameter access opening is not provided in a storage tank, the primary roof
access must not be less than ? inches. - Answers -✔✔ 30
No paint, coating, or wax containing ? is allowed. - Answers -✔✔ lead
Coatings for contact with potable water must be approved by ? , the National Sanitation
Foundation, or the Food and Drug Administration. - Answers -✔✔ EPA
An elevated storage tank is usually ? supported above ground on a tower. - Answers -
✔✔ steel
Pressure from an elevated tank is maintained by the ? of the water column. - Answers -
✔✔ height
A ? is a tank resting on the ground that is greater in height than diameter. - Answers -
✔✔ standpipe
Storage tank inspection results must be kept at least ? years. - Answers -✔✔ 5
Chain link fence material must leave a gap at the ? trim grass. - Answers -✔✔ ground
The state requires stored water to have a disinfectant ? - Answers -✔✔ residual
After construction or maintenance of storage tank, a ? sample must be taken after filing
the tank. - Answers -✔✔ bacteriological
If the bacteriological sample is negative, more samples must be taken until ?
consecutive samples are positive. - Answers -✔✔ 2
