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.
Shared WPI prep
Program authority: Arizona Department of Environmental Quality (ADEQ), Operator Certification Program
Local levels: Water Treatment - Grade 1, Grade 2, Grade 3, Grade 4 (T)
Route to the corresponding 2025 WPI standardized Water Treatment Class I–IV preparation, retaining Arizona's Grade 1–4 labels. Standardization is supported by ADEQ's current exam guide, not merely its use of WPI as provider. Grade/Class correspondence is explicitly documented in ADEQ's legacy reference guide; see limits.
Lists 'Water Treatment Exam - Grade 1, 2, 3, 4 (T)' and states Arizona utilizes WPI exams for operator certifications.
ADEQ 'currently utilizes the computerized 2025 ABC exam'; there are '16 Need-to-Know Criteria documents, one for each classification/grade level of exam certifiable in the state of Arizona'; these describe competencies 'covered on the standardized exams.'
Separate headings explicitly identify 'ABC Water Treatment Grade/Class I', II, III and IV 'Standardized Exam Breakdown'. Used for grade/class nomenclature only, not the current outline.
Shared WPI prep
Program authority: Arizona Department of Environmental Quality (ADEQ), Operator Certification Program
Local levels: Wastewater Treatment - Grade 1, Grade 2, Grade 3, Grade 4 (W)
Route to the corresponding 2025 WPI standardized Wastewater Treatment Class I–IV preparation. Wastewater scope is expressly documented, not inferred from drinking-water evidence. Grade/Class correspondence is explicitly documented in ADEQ's legacy reference guide; see limits.
Lists 'Wastewater Treatment Exam - Grade 1, 2, 3, 4 (W)' under Arizona classifications and grade levels.
Names Wastewater Treatment among the four classifications; identifies the current computerized 2025 ABC exam and 16 classification/grade-specific criteria documents for the standardized exams.
Separate headings explicitly identify 'ABC Wastewater Treatment Grade/Class I', II, III and IV 'Standardized Exam Breakdown'. Used for grade/class nomenclature only.
Shared WPI prep
Program authority: Arizona Department of Environmental Quality (ADEQ), Operator Certification Program
Local levels: Water Distribution - Grade 1, Grade 2, Grade 3, Grade 4 (D)
Route to the corresponding 2025 WPI standardized Water Distribution Class I–IV preparation, retaining Arizona's Grade 1–4 labels. ADEQ's program page identifies ADEQ as certificate issuer. Grade/Class correspondence is explicitly documented in its legacy reference guide; see limits.
Lists 'Water Distribution Exam - Grade 1, 2, 3, 4 (D)' and states Arizona utilizes WPI exams for operator certifications.
Names Water Distribution among the four exam classifications. ADEQ currently uses the computerized 2025 ABC exam and identifies 16 classification/grade-specific criteria documents describing the standardized exams.
Separate headings explicitly identify 'ABC Distribution Grade/Class I', II, III and IV 'Standardized Exam Breakdown'. Used for grade/class nomenclature only.
Shared WPI prep
Program authority: Arizona Department of Environmental Quality (ADEQ), Operator Certification Program
Local levels: Wastewater Collections - Grade 1, Grade 2, Grade 3, Grade 4 (C)
Route to the corresponding 2025 WPI standardized Wastewater Collection Class I–IV preparation. ADEQ's examination page uses the plural 'Wastewater Collections'; its program page also uses singular 'wastewater collection'. This is an ADEQ certification stream, not evidence of a separate voluntary association credential.
Lists 'Wastewater Collections Exam - Grade 1, 2, 3, 4 (C)' under Arizona classifications and grade levels.
Names Wastewater Collections among the four classifications; identifies the current computerized 2025 ABC exam and 16 classification/grade-specific criteria documents for the standardized exams.
Separate headings explicitly identify 'ABC Collections Grade/Class I', II, III and IV 'Standardized Exam Breakdown'. Used for grade/class nomenclature only.