[Frequently Asked Questions + 8 Years of Past Questions] What is a Water Quality Engineer Certification?
HOW? Is it really possible to pass the exam in just 4 weeks?

PART 01 TOP 30 FREQUENTLY APPEARING FEATURES
SUBJECT 01 Introduction to Water Pollution
SUBJECT 02 Water and Sewerage Plan
SUBJECT 03 Water pollution prevention technology
SUBJECT 04 Water Quality Pollution Process Testing Standards

PART 02 Latest 8-Year Exam Questions
2025 3rd CBT Restoration Problem
2025 2nd CBT Restoration Problem
2025 1st CBT Restoration Problem
2024 3rd CBT Restoration Problem
2024 2nd CBT Restoration Problem
2024 1st CBT Restoration Problem
2023 3rd CBT Restoration Problem
2023 2nd CBT Restoration Problem
2023 1st CBT Restoration Problem
2022 3rd CBT Restoration Problem
2022 2nd exam questions
2022 1st Exam Questions
2021 3rd Exam Questions
2021 2nd Exam Questions
2021 1st Exam Questions
2020 4th Exam Questions
2020 3rd Exam Questions
2020 1st and 2nd exam questions
2019 3rd exam questions
2019 2nd exam questions
2019 1st exam questions
2018 3rd exam questions
2018 2nd exam questions
2018 1st exam questions
[Core Theory] SUBJECT 01 Introduction to Water Pollution
CHAPTER 01 Introduction to Water Quality and Environment
CHAPTER 02 WATER CHEMISTRY
CHAPTER 03 Characteristics of Water and Types of Water Resources
CHAPTER 04 Water Pollution
CHAPTER 05 Aquatic Biology
CHAPTER 06 WATER RESOURCES MANAGEMENT
CHAPTER 07 Water Environment Conservation Act
CHAPTER 08 Enforcement Decree of the Water Environment Conservation Act CHAPTER 09 Enforcement Rules of the Water Environment Conservation Act CHAPTER 10 Framework Act on Environmental Policy
SUBJECT 02 Water and Sewerage Plan
CHAPTER 01 Basic Water Supply and Sewerage Plan
CHAPTER 02 Water Collection Facilities
CHAPTER 03 Water Supply Facilities
CHAPTER 04 Pipeline and Sewage Treatment Facilities
CHAPTER 05 Pumps and Pumping Stations

SUBJECT 03 Water pollution prevention technology
CHAPTER 01 DESIGN OF WASTEWATER TREATMENT FACILITIES
CHAPTER 02 Physical Processing
CHAPTER 03 CHEMICAL TREATMENT
CHAPTER 04 Biological Treatment
CHAPTER 05 Sludge Treatment
CHAPTER 06 Advanced Processing
CHAPTER 07 Wastewater Properties and Facility Management

SUBJECT 04 Water Quality Pollution Process Testing Standards
CHAPTER 01 General Provisions, Quality Assurance/Quality Control
CHAPTER 02 Sample Collection and Preservation
CHAPTER 03 Flow Measurement Method
CHAPTER 04 Instrumental Analysis Methods
CHAPTER 05 Test Methods by Item
CHAPTER 06 Safety and Environmental Management

[Includes the latest 8-year exam questions, including questions from 2025]

- Includes 3 CBT restoration problems from 2025
- Efficient learning is possible by indicating the frequency of occurrence in 1~3 levels.
- Quick grading QR codes allow for analysis of weak subjects and strategic learning.

[Key Theories Organized by Previous Exam Questions]

- Efficient learning possible with core theories centered on keywords that frequently appear in past exam questions
- Includes high-scoring points to ensure passing
- Free special lectures on all core theories

[Supplementary Learning Materials]

- Free special lectures on core theories and frequently occurring formulas and calculation problems
Course route: Eduwill Bookstore (book.eduwill.net) → Video Lecture Room → Search for 'Water Quality Engineer'
- Provides a memorization note of frequently used formulas and legal priorities
Usage path: Included in textbook
- Provides quick scoring QR codes for passing diagnosis and strategic learning.
Usage path: Included in textbook