Free Groundwater wells, Test Hole and Observation Well Drillers Examination Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Groundwater wells, Test Hole and Observation Well Drillers Examination practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1Who must obtain an Oklahoma Water Resources Board license before commercially drilling groundwater wells in Oklahoma?

   1. A. Every person engaged in that commercial drilling activity
   2. B. Only a landowner drilling a domestic well
   3. C. Only a contractor drilling public-supply wells
   4. D. Only an operator who also installs pumps

   Answer: A

   Explanation: The licensing duty turns on commercial drilling, not on the well's particular end use or pump work. The statute states: “All persons engaged in the commercial drilling or commercial plugging of groundwater wells ... shall make application for and become licensed.”

   Reference: Oklahoma Statutes Title 82 — 82 O.S. § 1020.16(A), PDF page 196

2. 2What is a useful first step when selecting a contractor for a new Oklahoma water well?

   1. A. Choose several OWRB-licensed drillers for comparison
   2. B. Hire the lowest bidder without checking licensure
   3. C. Select only a pump installer
   4. D. Wait until after drilling to discuss specifications

   Answer: A

   Explanation: Comparing qualified contractors permits meaningful review of construction and timing. OWRB advises: “Select several OWRB-licensed well drillers and pump installers. Discuss your well specifications and construction details with each potential contractor.”

   Reference: Owrb My Water Well — Selecting your Contractor, PDF page 9 (guide page 5)

3. 3Which site characteristic should be avoided when choosing a prospective well location?

   1. A. A site with clear rig access
   2. B. A level site with adequate operating room
   3. C. A staked site separated from pollution sources
   4. D. A site subject to recurring flooding

   Answer: D

   Explanation: Surface flooding increases both access and contamination risk. In its site-selection checklist, OWRB gives the direct instruction: “Avoid flood-prone areas.” Adequate access and staking are useful rather than disqualifying characteristics.

   Reference: Owrb My Water Well — Establishing the Well Site, guide page 5

4. 4For which excavation does OAC 785:35-5-3 require an individual completion or plugging report?

   1. A. Each groundwater-well test hole completed or plugged
   2. B. Only test holes that later become supply wells
   3. C. Only holes deeper than 100 feet
   4. D. Only holes located in cities

   Answer: A

   Explanation: The reporting duty applies to each regulated excavation in this category. The rule's covered-excavation list expressly includes a "groundwater well test hole"; it therefore requires an individual completion or plugging report for that test hole.

   Reference: Volume 40 Number 22 of The Oklahoma Register — OAC 785:35-5-3(b), page 1306

5. 5On the OWRB groundwater-well completion report, how large is each square in the one-mile location diagram?

   1. A. 10 acres
   2. B. 20 acres
   3. C. 40 acres
   4. D. 160 acres

   Answer: A

   Explanation: The diagram subdivides the section so the well can be plotted more precisely than by section alone. The form states directly beneath the one-mile diagram: “Each square is 10-acres.”

   Reference: MULTI-PURPOSE COMPLETION REPORT — Legal Location of Water Well diagram, page 1

6. 6Which subject is expressly included in the statutory scope of Oklahoma's examination for water well drillers?

   1. A. Residential plumbing fixture sizing
   2. B. Proper sealing and abandonment of wells and boreholes
   3. C. Municipal wastewater plant operation
   4. D. Design of closed-loop heat pumps only

   Answer: B

   Explanation: The driller examination is tied to well and borehole work. Section 1020.16 states that it tests “construction, alteration, and repair of wells and boreholes, including proper sealing and abandonment of wells and boreholes.”

   Reference: Oklahoma Statutes Title 82 — 82 O.S. § 1020.16(B)(1), PDF page 197

7. 7Before relying on a prospective drilling firm, which status should the customer verify?

   1. A. Whether it owns the adjacent parcel
   2. B. Whether the firm and its operators have valid credentials and are in good standing
   3. C. Whether its rig was manufactured in Oklahoma
   4. D. Whether it also holds a plumbing license

   Answer: B

   Explanation: The relevant check concerns current OWRB authority to perform the work. The OWRB guide asks: “Does your contracting firm and its operators posses a valid licensed or certification and is the firm in good standing with the Board?”

   Reference: Owrb My Water Well — Information to Request of Your Contractor, guide page 6

8. 8Which nearby feature should be treated as a potential pollution source when establishing a well site?

   1. A. An existing septic system
   2. B. A surveyed property corner
   3. C. A gravel equipment pad
   4. D. A licensed contractor's truck

   Answer: A

   Explanation: The site review should identify sources capable of contaminating groundwater. OWRB's examples of “Possible pollution sources” expressly include “Existing or proposed septic systems (yours or your neighbors’).”

   Reference: Owrb My Water Well — Establishing the Well Site, guide page 4

9. 9Whose contact information must appear on a test-hole or fresh-water observation-well completion report?

   1. A. The nearest neighbor's
   2. B. The well owner's name, address, and telephone number
   3. C. The casing manufacturer's
   4. D. The county assessor's

   Answer: B

   Explanation: The record identifies the person responsible for the property and excavation. The rule requires the "well owner's name" together with the owner's "address" and "telephone number."

   Reference: Volume 40 Number 22 of The Oklahoma Register — OAC 785:35-5-3(b)(5), page 1306

10. 10What orientation must be recognized when plotting a well on the completion report's one-mile grid?

    1. A. Down-gradient only
    2. B. North, as marked above the grid
    3. C. Prevailing-wind direction
    4. D. Direction of rig travel

    Answer: B

    Explanation: A location plot is ambiguous without orientation. The OWRB form places “North” above the one-mile grid and instructs: “Please Plot Well Location.” The plot should therefore follow the displayed north orientation.

    Reference: MULTI-PURPOSE COMPLETION REPORT — Legal Location of Water Well diagram, page 1