National Ground Water Association

Certified Vertical Closed Loop Driller

Advances in geothermal technologies and their usage created the need for a specific voluntary certification designation for geothermal drillers. NGWA responded to this need with the designation of Certified Vertical Closed Loop Driller (CVCLD).

The CVCLD is considered an independent designation from the CWD or CWD/PI. The designation reflects an individual who has passed a written exam administered by NGWA that evaluates an individual’s knowledge of the skills and competencies associated with constructing a loop well.

The exam encompasses the skills and competencies reflected on the drilling operations DACUM and the geothermal vertical closed loop drilling operations DACUM. Exams can be scheduled through NGWA’s third-party testing facility by contacting PSI LaserGrade at 800 211.2754 (360 896.9111 outside the United States).

1. Certification Agreement Form — applicant agrees to adhere to the statutes of the NGWA Voluntary Certification Program and its policies. 
2. Candidate Reference Form — applicant must provide the names of two references who can verify experience. 
3. Current Affidavit — a signed document claiming the individual has never been convicted of any civil or criminal legal action as a result of professional activities relating to geothermal applications.

1. Annual recertification fees
2. Annual continuing education points (CEP form) — an individual must obtain seven (7) continuing education points each calendar year; four (4) of the seven (7)points required for renewal must be from geothermal/heat pump-related educational offerings, while the remaining three (3) points may be earned within the same continuing education offering pool as a CWD, CPI, or CWD/PI
3. Current Affidavit — a signed document claiming the individual has never been convicted of any civil or criminal legal action as a result of professional activities relating to geothermal applications.