100+ Free NH Water/Wastewater Operator Practice Questions

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Which New Hampshire state agency oversees water works operator certification?

NH Department of Health

NH Department of Environmental Services (NHDES)

NH Public Utilities Commission

NH Department of Agriculture

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Sample NH Water/Wastewater Operator Practice Questions

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1Which New Hampshire state agency oversees water works operator certification?

A.NH Department of Health

B.NH Department of Environmental Services (NHDES)

C.NH Public Utilities Commission

D.NH Department of Agriculture

Explanation: The New Hampshire Department of Environmental Services (NHDES) oversees the water works operator certification program, administering exams, reviewing applications, and issuing certifications.

2How many certification grades does New Hampshire have for water works operators?

A.Three grades

B.Four grades

C.Five grades: Grade 1A through Grade 4

D.Six grades

Explanation: New Hampshire has five grades of certification for water works operators: Grade 1A (most basic), Grade 1, Grade 2, Grade 3, and Grade 4 (highest). Each requires progressively more education and experience.

3What is the minimum passing score for a New Hampshire water operator certification exam?

A.60%

B.65%

C.70%

D.75%

Explanation: New Hampshire requires a passing score of 70% or higher on the certification examination. This applies to all grades of water works and wastewater operator certification.

4What are the requirements for New Hampshire's entry-level Grade 1A water operator certification?

A.Bachelor's degree in engineering

B.High school diploma and completion of the Small Public Water System Operator Course or 6 months experience

C.Five years of experience

D.No requirements

Explanation: Grade 1A requires a high school diploma or equivalent and completing the Small Public Water System Operator Course, or having the required education and at least 6 months of experience (3 months on a drinking water system).

5What are the requirements for New Hampshire Grade 1 Treatment and Distribution certification?

A.Only a high school diploma

B.High school diploma and one year of operating experience

C.College degree and two years experience

D.Five years experience with no education requirement

Explanation: New Hampshire Grade 1 Treatment and Distribution certifications require a high school education or equivalent and one year of operating experience. Grade 1A holders can upgrade to Grade 1 after gaining sufficient experience.

6How many levels of wastewater operator certification does New Hampshire have?

A.Two levels

B.Three levels

C.Four levels: Grade I through Grade IV

D.Five levels

Explanation: New Hampshire has four levels of wastewater treatment facility operator certification: Grade I (lowest) through Grade IV (highest), based on facility complexity and design flow.

7When are New Hampshire in-person water works certification exams scheduled for 2026?

A.January and July only

B.April 21, July 21, and October 29, 2026

C.Monthly throughout the year

D.Only in December

Explanation: NHDES schedules in-person water works certification exams for April 21, July 21, and October 29, 2026. Computer-based exams for Treatment and Distribution Grades I-IV are also available at testing locations throughout the state.

8Where are New Hampshire wastewater operator exams offered?

A.Online only

B.At the Franklin Training Facility on the first Wednesday of June and December

C.At any NHDES office

D.At PSI testing centers statewide

Explanation: NHDES offers wastewater operator exams on the first Wednesday of June and December each year at the Franklin Training Facility (528 River Street, Franklin, NH 03235).

9What continuing education is required for New Hampshire Grade 1A operators?

A.No CE required

B.5 Total Contact Hours (TCH) every two years

C.10 TCH annually

D.20 TCH every three years

Explanation: New Hampshire Grade 1A operators must earn at least 5 Total Contact Hours (TCH) of continuing education every two years to maintain their licenses. Higher grades require more continuing education.

10What computer-based testing options are available for NH water operator exams?

A.No computer testing available

B.Treatment and Distribution Grades I-IV exams at locations in Portsmouth, Nashua, Manchester, Newington, and Concord

C.Only Grade 1A available online

D.Only at NHDES offices in Concord

Explanation: New Hampshire offers computer-based certification exams for Treatment and Distribution Grades I-IV at various locations throughout the state including Portsmouth, Nashua, Manchester, Newington, and Concord.

About the NH Water/Wastewater Operator Exam

The New Hampshire water and wastewater operator certification exam covers NHDES regulations, water works operations (Grade 1A through Grade 4), wastewater treatment (Grade I-IV), distribution systems, laboratory testing, and safety procedures.

Questions

100 scored questions

Time Limit

2-3 hours

Passing Score

70%

Exam Fee

Varies by grade (New Hampshire Department of Environmental Services (NHDES))

NH Water/Wastewater Operator Exam Content Outline

20%

New Hampshire State Laws & Regulations

NHDES certification grades, Grade 1A through Grade 4, wastewater Grades I-IV, and compliance

25%

Water Treatment

Coagulation, flocculation, filtration, disinfection, and treatment for New England source waters

25%

Wastewater Treatment

Activated sludge, sludge handling, biological treatment, nutrient removal, and process control

15%

Distribution & Collection Systems

Pump operations, hydraulics, freeze protection, cross-connection control, and maintenance

15%

Laboratory Testing & Math

Water quality testing, BOD, TSS, chlorine residual, calculations, and record-keeping

How to Pass the NH Water/Wastewater Operator Exam

What You Need to Know

Passing score: 70%
Exam length: 100 questions
Time limit: 2-3 hours
Exam fee: Varies by grade

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Frequently Asked Questions

What certification levels does New Hampshire offer for water operators?

New Hampshire has five water works grades (1A, 1, 2, 3, 4) and four wastewater grades (I through IV).

What is the Grade 1A certification?

Grade 1A is the entry-level certification for small public water systems, requiring a high school diploma and the Small Public Water System Operator Course or 6 months experience.

When are 2026 exam dates?

In-person water works exams: April 21, July 21, October 29. Wastewater: first Wednesday of June and December. Computer-based exams available at multiple locations.