Trades Certifications
Trade certification exams: EPA Section 608 and water and wastewater operator certifications.
EPA Section 608 Technician Certification
280 questions for the EPA 608 refrigerant certification: Core, Type I, Type II and Type III, from the regulation itself (40 CFR 82 subpart F).
Water Treatment Operator Class I
Study drinking water treatment, water testing, equipment, source water, and safe operation.
Water Distribution Operator Class I
Study water delivery systems, equipment, water quality, and safe operation.
Wastewater Treatment Operator Class I
Study wastewater treatment, plant equipment, laboratory tests, and safe operation.
Wastewater Collection Operator Class I
Study sewer systems, pumping stations, monitoring, equipment, and safety.
Questions
Common Questions
Which courses are in this track?
EPA Section 608 Technician Certification (280 questions); Water Treatment Operator Class I (309 questions); Water Distribution Operator Class I (304 questions); Wastewater Treatment Operator Class I (301 questions); Wastewater Collection Operator Class I (316 questions).
How are the practice tests scored?
EPA Section 608 Technician Certification: 100 questions, 18 of 25 per section. Water Treatment Operator Class I: 100 questions, practice target: 70 of 100. Water Distribution Operator Class I: 100 questions, practice target: 70 of 100. Wastewater Treatment Operator Class I: 100 questions, practice target: 70 of 100. Wastewater Collection Operator Class I: 100 questions, practice target: 70 of 100.
Is it free?
Part of every course is free: a slice of every topic and one short practice test a day. Full access is $10 a month for one course, or $20 a month for every course on the site.