Source check: 2026-10-04. Shared WPI courses are linked only where the standardized exam and class match are confirmed. Local grades may not equal WPI class numbers. Your authority's current documents control.
Exam route under review
Program authority: New Jersey Department of Environmental Protection (NJDEP), Water & Wastewater System Operator Licensing
Local levels: Public Water Treatment System: T-1, T-2, T-3, T-4 (also written T1–T4); separate Very Small Water System license: VSWS.
NJDEP licensing is verified. Official sources establish ABC/WPI involvement and PSI delivery, but do not identify standardized versus customized examinations or map T grades to WPI classes. VSWS is a separate local category, not a numbered shared level.
No state-matched course is linked for this stream yet.
Lists 'Public Water Treatment System (T License)' and 'Very Small Water System (VSWS License)'; licensing processes are 'managed by the DEP'. The November 2020 notice describes arrangements with ABC and PSI, without saying standardized.
Q1 explicitly lists T-1, T-2, T-3 and T-4 and separate VSWS eligibility. Q19 names Introduction to Water/Wastewater for T1 and Advanced Water for T2.
Effective January 6, 2023, exams move to testing centers; certain rescheduling requires contacting 'DEP or WPI (formerly ABC) directly'. Does not specify standardized/customized forms or class correspondence.
Exam route under review
Program authority: New Jersey Department of Environmental Protection (NJDEP), Water & Wastewater System Operator Licensing
Local levels: Public Wastewater Treatment System: S-1, S-2, S-3, S-4 (also written S1–S4). Separate Industrial Wastewater Treatment System: N-1, N-2, N-3, N-4.
Wastewater treatment authority and grades are independently documented, not inferred from drinking water. Neither S nor N examination series is explicitly identified as standardized, customized, or state-specific in the opened sources; no shared-class mapping is established.
No state-matched course is linked for this stream yet.
Lists 'Public Wastewater Treatment System (S License)' and 'Industrial Wastewater Treatment System (N License)' under DEP-managed licensing; the exam announcement covers water and wastewater arrangements with ABC/PSI.
Q1 explicitly lists S-1 through S-4 and N-1 through N-4. Q19 names Introduction to Water/Wastewater for S1, Advanced Wastewater for S2, and Industrial Wastewater for N1–N4.
7:10A-1.4: examinations are prepared, conducted and scored under Department procedures with Board advice. 1.15 requires relevant advanced training for classes 2–4 and separate industrial-waste training for N applicants. These provisions do not identify exam standardization.
Exam route under review
Program authority: New Jersey Department of Environmental Protection (NJDEP), Water & Wastewater System Operator Licensing
Local levels: Public Water Distribution System: W-1, W-2, W-3, W-4 (also written W1–W4).
The distribution licensing stream and four local grades are explicitly documented. ABC/WPI involvement does not establish standardized exams, and no W-grade-to-WPI-class correspondence was verified.
No state-matched course is linked for this stream yet.
Explicitly lists 'Public Water Distribution System (W License)' and states DEP manages licensing. The ABC/PSI arrangement is described without standardized-exam scope.
Q1 explicitly lists W-1, W-2, W-3 and W-4. Q19 names Introduction to Water/Wastewater for W1 and Advanced Water for W2.
The January 2023 update identifies WPI as formerly ABC and PSI testing-center delivery; it provides no standardized/customized distinction or grade mapping.
Exam route under review
Program authority: New Jersey Department of Environmental Protection (NJDEP), Water & Wastewater System Operator Licensing
Local levels: Public Wastewater Collection System: C-1, C-2, C-3, C-4 (also written C1–C4).
Collection licensing is explicitly established as its own NJDEP stream. The sources do not establish whether any C-grade exam is WPI standardized, customized, or state-specific; C1–C4 numbering alone cannot establish WPI class correspondence.
No state-matched course is linked for this stream yet.
Explicitly lists 'Public Wastewater Collection System (C License)' within DEP-managed licensing, and links a dedicated Public Wastewater Collection Systems course outline.
Q1 explicitly lists C-1, C-2, C-3 and C-4. Q19 names Introduction to Water/Wastewater for C1 and Collections Course for C2.
1.15 explicitly includes public wastewater collection (C) in examination eligibility and requires a relevant Department-approved advanced course for class 2, 3 or 4 applicants. It does not state standardized WPI/ABC examination use.
Dedicated prep is not available or being sold yet.