LOUISIANA WATER WELL DRILLER LICENSING EXAM
(PDF) | 2026 EXAM QUESTIONS AND ANSWERS +
RATIONALES | STUDY GUIDE | 100% CORRECT
1. Which Louisiana Administrative Code title contains the Water Well Rules and
Regulations?
A) Title 51
B) Title 56
C) Title 62
D) Title 70
Correct Answer: B) Title 56
Rationale: Title 56 of the Louisiana Administrative Code (LAC) houses Part I, the Water Well
Rules and Regulations governing drilling and licensing .
2. Which Louisiana state agency has primary authority over water well construction and
licensing?
A) Louisiana Department of Health (LDH) - Office of Public Health
B) Louisiana Department of Natural Resources (LDNR) - Office of Conservation
C) Louisiana Department of Environmental Quality (LDEQ)
D) Louisiana Department of Agriculture and Forestry
Correct Answer: A) Louisiana Department of Health (LDH) - Office of Public Health
Rationale: The Louisiana Department of Health (LDH), specifically the Office of Public Health,
has primary authority over water well construction, licensing, and regulation under the Louisiana
Administrative Code Title 51, Part XII .
3. Which agency issues the Driller's License in Louisiana?
A) Louisiana Department of Health (LDH)
B) Louisiana Department of Natural Resources (LDNR) – Office of Conservation
C) Louisiana Department of Environmental Quality (LDEQ)
D) Louisiana Public Service Commission
Correct Answer: B) Louisiana Department of Natural Resources (LDNR) – Office of
Conservation
Rationale: The LDNR Office of Conservation is responsible for issuing and regulating driller
licenses .
4. According to Louisiana law, how many days after well completion must a contractor
submit the Water Well Registration Long Form?
A) 10 days
B) 20 days
C) 30 days
D) 45 days
,Correct Answer: C) 30 days
Rationale: The Water Well Registration Long Form must be filed within 30 days of well
completion to maintain compliance .
5. What is the minimum distance required between a water well and a septic tank absorption
field in Louisiana?
A) 50 feet
B) 75 feet
C) 100 feet
D) 150 feet
Correct Answer: C) 100 feet
Rationale: Louisiana regulations require a minimum separation distance of 100 feet between a
water well and a septic tank absorption field (drainfield) to prevent contamination .
6. What is the required minimum distance between a water well and a septic tank?
A) 25 feet
B) 50 feet
C) 75 feet
D) 100 feet
Correct Answer: B) 50 feet
Rationale: The minimum distance between a water well and a septic tank is 50 feet to prevent
bacterial and viral contamination .
7. What is the required minimum distance between a water well and a chemical storage area
or petroleum tank?
A) 50 feet
B) 100 feet
C) 150 feet
D) 300 feet
Correct Answer: D) 300 feet
Rationale: Louisiana regulations require a minimum separation distance of 300 feet between a
water well and chemical storage areas and petroleum tanks to protect groundwater from chemical
contamination .
8. A well located within 50 ft of a septic system must meet which setback requirement?
A) Minimum 25 ft
B) Minimum 50 ft
C) Minimum 75 ft
D) No setback required
Correct Answer: B) Minimum 50 ft
, Rationale: Louisiana regulations require a minimum 50-foot setback from septic systems to
protect groundwater from contamination .
9. How far above ground level must the well casing extend?
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
Correct Answer: B) 12 inches
Rationale: The well casing must extend at least 12 inches above ground level to prevent surface
water from entering the well .
10. What is the minimum liability insurance coverage required for a Louisiana water well
drilling contractor?
A) $100,000
B) $200,000
C) $300,000
D) $500,000
Correct Answer: C) $300,000
Rationale: Louisiana requires water well drilling contractors to maintain minimum liability
insurance of $300,000 to protect the public from potential damages or injuries .
11. How long is a well drilling permit valid in Louisiana?
A) 30 days
B) 90 days
C) 180 days
D) 365 days
Correct Answer: D) 365 days
Rationale: Well drilling permits are valid for 365 days (1 year) from the date of issuance .
12. The annular space between the well casing and the borehole must be sealed with:
A) Sand
B) Gravel
C) Neat cement grout or bentonite
D) Native soil
Correct Answer: C) Neat cement grout or bentonite
Rationale: The annular space must be sealed with neat cement grout or bentonite to prevent
surface water and contaminants from traveling down the outside of the casing .
13. Grout must be placed from the bottom of the casing to:
A) The top of the screen
(PDF) | 2026 EXAM QUESTIONS AND ANSWERS +
RATIONALES | STUDY GUIDE | 100% CORRECT
1. Which Louisiana Administrative Code title contains the Water Well Rules and
Regulations?
A) Title 51
B) Title 56
C) Title 62
D) Title 70
Correct Answer: B) Title 56
Rationale: Title 56 of the Louisiana Administrative Code (LAC) houses Part I, the Water Well
Rules and Regulations governing drilling and licensing .
2. Which Louisiana state agency has primary authority over water well construction and
licensing?
A) Louisiana Department of Health (LDH) - Office of Public Health
B) Louisiana Department of Natural Resources (LDNR) - Office of Conservation
C) Louisiana Department of Environmental Quality (LDEQ)
D) Louisiana Department of Agriculture and Forestry
Correct Answer: A) Louisiana Department of Health (LDH) - Office of Public Health
Rationale: The Louisiana Department of Health (LDH), specifically the Office of Public Health,
has primary authority over water well construction, licensing, and regulation under the Louisiana
Administrative Code Title 51, Part XII .
3. Which agency issues the Driller's License in Louisiana?
A) Louisiana Department of Health (LDH)
B) Louisiana Department of Natural Resources (LDNR) – Office of Conservation
C) Louisiana Department of Environmental Quality (LDEQ)
D) Louisiana Public Service Commission
Correct Answer: B) Louisiana Department of Natural Resources (LDNR) – Office of
Conservation
Rationale: The LDNR Office of Conservation is responsible for issuing and regulating driller
licenses .
4. According to Louisiana law, how many days after well completion must a contractor
submit the Water Well Registration Long Form?
A) 10 days
B) 20 days
C) 30 days
D) 45 days
,Correct Answer: C) 30 days
Rationale: The Water Well Registration Long Form must be filed within 30 days of well
completion to maintain compliance .
5. What is the minimum distance required between a water well and a septic tank absorption
field in Louisiana?
A) 50 feet
B) 75 feet
C) 100 feet
D) 150 feet
Correct Answer: C) 100 feet
Rationale: Louisiana regulations require a minimum separation distance of 100 feet between a
water well and a septic tank absorption field (drainfield) to prevent contamination .
6. What is the required minimum distance between a water well and a septic tank?
A) 25 feet
B) 50 feet
C) 75 feet
D) 100 feet
Correct Answer: B) 50 feet
Rationale: The minimum distance between a water well and a septic tank is 50 feet to prevent
bacterial and viral contamination .
7. What is the required minimum distance between a water well and a chemical storage area
or petroleum tank?
A) 50 feet
B) 100 feet
C) 150 feet
D) 300 feet
Correct Answer: D) 300 feet
Rationale: Louisiana regulations require a minimum separation distance of 300 feet between a
water well and chemical storage areas and petroleum tanks to protect groundwater from chemical
contamination .
8. A well located within 50 ft of a septic system must meet which setback requirement?
A) Minimum 25 ft
B) Minimum 50 ft
C) Minimum 75 ft
D) No setback required
Correct Answer: B) Minimum 50 ft
, Rationale: Louisiana regulations require a minimum 50-foot setback from septic systems to
protect groundwater from contamination .
9. How far above ground level must the well casing extend?
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
Correct Answer: B) 12 inches
Rationale: The well casing must extend at least 12 inches above ground level to prevent surface
water from entering the well .
10. What is the minimum liability insurance coverage required for a Louisiana water well
drilling contractor?
A) $100,000
B) $200,000
C) $300,000
D) $500,000
Correct Answer: C) $300,000
Rationale: Louisiana requires water well drilling contractors to maintain minimum liability
insurance of $300,000 to protect the public from potential damages or injuries .
11. How long is a well drilling permit valid in Louisiana?
A) 30 days
B) 90 days
C) 180 days
D) 365 days
Correct Answer: D) 365 days
Rationale: Well drilling permits are valid for 365 days (1 year) from the date of issuance .
12. The annular space between the well casing and the borehole must be sealed with:
A) Sand
B) Gravel
C) Neat cement grout or bentonite
D) Native soil
Correct Answer: C) Neat cement grout or bentonite
Rationale: The annular space must be sealed with neat cement grout or bentonite to prevent
surface water and contaminants from traveling down the outside of the casing .
13. Grout must be placed from the bottom of the casing to:
A) The top of the screen
