The closest thing to test day: 25 questions drawn at random from the full 102-question bank — Core, Type I, Type II, Type III, and Recent Rule Changes in one sitting. The proctored sections pass at 70%, so the pass mark here is 18 of 25, shown before you start. Instant feedback after each answer — the one mercy the real exam doesn't give you.
Rules current as of October 23, 2026.
One question at a time, instant feedback, running score. No sign-up, nothing saved — your answers never leave this phone or browser.
Pass mark: 18 of 25 (70%) — the line the proctored sections use. At the end you get your score, a pass/fail read against that mark, and a per-section breakdown showing which bin to drill next.
This was free prep. The certification itself comes from a proctored exam run by an EPA-approved certifying program — passing Core plus a type section at 70% is what earns the card. Prep is not certification.
One route in: an online prep course that leads to booking the proctored exam. The exam fee is separate — the course is preparation, not the test itself.
HeatSpring EPA 608 Prep Course →Or book the exam directly: ESCO Institute · Mainstream Engineering (EPATest.com)
Disclosure: we may earn a commission if you enroll through our link, at no extra cost to you.
