The Master Groundwater Contractor (MGWC) designation recognizes experienced groundwater professionals who have demonstrated advanced knowledge, leadership, and dedication to excellence in water well construction, pump installation, and business management.
Earning the MGWC designation demonstrates a commitment to professional development, industry expertise, and the highest standards of service within the groundwater industry.
Eligibility Requirements
To be eligible to take the MGWC exam, candidates must:
- Hold current NGWA certification in good standing in all required exam categories, except exams M and N.
- Have at least five years of full-time experience in well construction or pump installation in an operational or supervisory capacity.
- Demonstrate strong technical knowledge and experience in groundwater contracting operations.
- Possess effective customer service, communication, and employee relations skills.
The MGWC designation recognizes professionals who combine technical expertise with the leadership and business management skills necessary to succeed in the groundwater industry.
Exam Content
The NGWA MGWC exam has been revised to reflect the knowledge, skills, and competencies expected of experienced groundwater contractors and business leaders.
The revised exam evaluates candidates across six key areas of groundwater contracting:
- Drilling operations — 15%
- Water systems — 15%
- Business management — 30%
- Troubleshooting and diagnostics — 25%
- Water quality and sustainability — 10%
- Emerging issues — 5%
Together, these competency areas reflect the broad technical, operational, and business knowledge required of a Master Groundwater Contractor.
The MGWC exam consists primarily of essay questions, with some multiple-choice questions included.
The essay questions are designed to evaluate a candidate’s ability to apply their knowledge, explain their reasoning, and demonstrate practical understanding of groundwater contracting operations.
Exam Scheduling
The MGWC exam is offered annually during NGWA’s Groundwater Week or candidates may also arrange to take the exam at NGWA headquarters in Westerville, Ohio throughout the year. Advance scheduling is required for either option, and arrangements must be made at least 30 days before the desired testing date.
Contact the NGWA certification coordinator to discuss available testing dates and scheduling requirements at certification@ngwa.org.
Exam Duration and Passing Score
- Exam duration: Four consecutive hours
- Testing session: The exam must be completed in one session.
- Passing score: A minimum score of 70% is required to pass.
The exam covers business management, drilling operations, water systems, troubleshooting and diagnostics, and other key areas of groundwater contracting.
Exam Fee
The MGWC exam fee is $75.
If you have questions about the MGWC exam or NGWA certification programs, contact the NGWA certification coordinator at certification@ngwa.org or call (800) 551-7379 or (614) 898-7791 outside the United States.