Start Date: December 05, 2023
Location: NHDES Building, 29 Hazen Drive, Concord, NH

The treatment, distribution, and combined grade IA drinking water operator examinations are scheduled to be given on Tuesday, April 25, 2023, and Tuesday, December 5, 2023, at the NHDES Building, 29 Hazen Drive, Concord, NH.

Persons planning to take an examination must submit an Application for Water Works Operator Certification and a $50 fee for each exam. NHDES must receive completed applications with fee at least 30 days prior to the exam date.

If you have any questions, please contact Jason Smith at (603) 271-2410 or

If unable to attend in person, a computer-based option is now available at various testing locations throughout the state throughout the year.