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How to become a certified water/wastewater operator in New Jersey. State-specific exams required. CE hours: 30. Total initial fees: $150. Verified 2026-03-21. Data verified 2026-03-21. Source: LicenseMap (getlicensemap.com).
Water/Wastewater Operator — OIT/ORC
Yes
Certification Required
Not Accepted
ABC Exams Accepted
Available
Water Treatment
Available
Wastewater Treatment
30 hrs
CE Hours
$150
Total Initial Fees
Education & Training Requirements
VerifiedMinimum Education
High school diploma or GED required; DEP-approved courses required before licensing
Minimum Degree Level
High school diploma/GED
Approved Programs
NJDEP-approved water/wastewater operator courses; institutional training programs
Water and wastewater operator certification requires at minimum a high school diploma or GED for entry-level positions. Higher certification levels may require additional education such as college coursework in water/wastewater technology, environmental science, chemistry, biology, or engineering. Many community colleges and technical schools offer water/wastewater technology programs that prepare candidates for certification examinations. On-the-job experience at a treatment facility is also required, with hours varying by certification level.
ABC Certification & State Requirements
VerifiedABC Certification Not Accepted
Association of Boards of Certification
Water Treatment Cert.
Available
Wastewater Treatment Cert.
Available
Certification Details
New Jersey requires licensed operators for public water systems, wastewater treatment (S), collection (C/CN), and industrial wastewater (N/NS/NN). DEP-approved exams held at least twice annually. Three-year renewal cycle with continuing education. Contact: Examinations & Licensing Unit (609) 777-1013.
The ABC (Association of Boards of Certification) is the primary national examination body for water and wastewater operators. Approximately 35 states accept ABC standardized examinations for operator certification. Certification is typically tiered (e.g., Class I through IV or Grade 1 through 4) with higher levels corresponding to more complex treatment facilities and larger population served. Water treatment, water distribution, wastewater treatment, and wastewater collection are separate certification categories in most states.
Examination Requirements
VerifiedState-Administered Examinations Required
Association of Boards of Certification
Exam Topics
Water treatment, distribution, wastewater treatment, collection, industrial wastewater, NJ regulations, safety, mathematics
Passing Score
70%
State-Specific Exam Required
State Supplemental Examination
The ABC (Association of Boards of Certification) provides standardized examinations for water and wastewater operator certification, accepted by approximately 35 states. Examinations cover water treatment processes, distribution system operation, water quality analysis, laboratory procedures, regulatory compliance, safety protocols, and mathematics. A passing score of 70% is standard across most jurisdictions. Some states administer their own examinations covering state-specific regulations and treatment requirements. Separate examinations are typically required for water treatment, water distribution, wastewater treatment, and wastewater collection.
State Certification Requirements
VerifiedState Certification Required
State Certification Title
Licensed Water/Wastewater System Operator
Additional Notes
Multiple license types: water supply, wastewater treatment (S), collection (C/CN), industrial wastewater (N/NS/NN).
All 50 states and the District of Columbia require certification for water and wastewater treatment system operators under the federal Safe Drinking Water Act and Clean Water Act. Each state establishes its own certification program with tiered levels based on facility complexity and population served. The Association of Boards of Certification (ABC) provides standardized examinations used by approximately 35 states. Operators must demonstrate competency in treatment processes, water quality, regulatory compliance, and safety.
Facility Types & Operator Authority
VerifiedFacility Types
Public water supply systems, wastewater treatment systems, wastewater collection systems, industrial wastewater treatment plants
Certification Levels
Multiple license types (S, C, CN, N, NS, NN) with levels based on facility complexity
Multiple Certifications
Permitted
Supervision Requirements
Licensed operator required for all public water and wastewater systems
Certified water/wastewater operators are responsible for the safe and compliant operation of water treatment plants, water distribution systems, wastewater treatment facilities, and wastewater collection systems. They ensure safe drinking water for public consumption and proper treatment of sewage before discharge. Operators must be certified at a level equal to or higher than the facility's classification. Most states allow operators to hold multiple certifications across water treatment, distribution, wastewater treatment, and collection categories.
| Fee | Amount |
|---|---|
Application Fee Course fees separate ($1,040-$1,999 for training courses) | $75 |
Certification Fee Course fees separate ($1,040-$1,999 for training courses) | $75 |
Renewal Fee | $75 |
Total Initial Fees Course fees separate ($1,040-$1,999 for training courses) | $150 |
Renewal & CE Requirements
Verified3 years
Renewal Period
30 hrs
CE Hours Required
$75
Renewal Fee
CE Details
Continuing education required during 3-year renewal cycle. Operator licenses valid from issuance to September 30.
Regulatory Board
Water and wastewater operator certifications must be renewed on schedule with the state certifying authority. Renewal cycles typically range from 2 to 3 years with 12-30 continuing education hours per cycle. CE requirements typically cover treatment processes, water quality analysis, regulatory compliance updates, laboratory procedures, safety protocols, and emerging contaminants. Many states accept training from ABC-approved providers, state conferences, and online courses.
Out-of-State Reciprocity
VerifiedEndorsement Available
Yes
ABC Reciprocity
Yes
Reciprocity Requirements
Most states offer reciprocity or endorsement for water/wastewater operators certified in other states. States that accept ABC examinations generally offer smoother reciprocity for operators who have passed ABC standardized tests at the equivalent level. Requirements typically include verification of current certification, meeting experience requirements, and paying application fees. Some states may require a state-specific examination covering local regulations. Reciprocity agreements vary and should be verified with the specific state certifying authority.
New Jersey has one of the most detailed license type systems with separate categories for wastewater treatment (S), collection (C/CN), and three levels of industrial wastewater (N/NS/NN) in addition to water supply licenses.
Multiple license types: water supply, wastewater treatment (S), collection (C/CN), industrial wastewater (N/NS/NN).
DEP-approved exams held at least twice annually.
Three-year renewal cycle; licenses expire September 30.
Training courses range from $1,040 to $1,999.
Contact: Examinations & Licensing Unit (609) 777-1013.
There is no interstate compact for water/wastewater operators. ABC member states generally recognize each other's ABC exam scores, providing significant mobility.
Explore requirements for other professional licenses in New Jersey.
How this state compares to 50 others for this profession
Timeline
#1 of 51
Salary
#5 of 51
Cost
#36 of 51
Processing
#1 of 51
Based on May 2024 Bureau of Labor Statistics OEWS data for Water and Wastewater Treatment Plant and System Operators (SOC 51-8031)
Entry Level
$62,430
25th percentile
Median
$75,200
+29% vs. national avg ($58,260)Experienced
$85,570
75th percentile
Wage Distribution (Annual)
2,040 employed in this state
Source: BLS OEWS – Water and Wastewater Treatment Plant and System Operators (May 2024)
National employment projections for 2024-2034
Projected Growth
+2.3%
Below AverageNew Jobs
+3,000
over 10 years
Annual Openings
12,300
per year (avg.)
130,200 currently employed nationwide (2024)
Source: BLS Employment Projections 2024-2034 (September 2025)
Government fees and exam costs to obtain your initial license
Note: These are government licensing fees only. Education/training program costs (tuition, books, etc.) are not included as they vary widely by institution.
Estimated total: 32–76 weeks
Timeline estimated from licensing requirements on this page.
Source: NJDEP - Water & Wastewater System Operator Licensing
4 to 8 weeks after complete application submission
Estimated processing time
Source: NJDEP - Water & Wastewater System Operator Licensing
Study guides for water and wastewater operator certification exams.
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2025-2026 certification cycle
Accessed 2025-03-09
2025-2026 certification cycle
Accessed 2025-03-09
New Jersey requires certification for water/wastewater operators. All certification is managed through the New Jersey Department of Environmental Protection.
Requirements vary by state. Always verify current requirements with your state certifying authority.