EHT 225 covers 14 topics. StudyPath paces them into daily study
sessions that finish before your exam date, with practice questions and worked
answers for each one.
Wholesome water is free from harmful physical, chemical and biological contaminants and meets the standards set by national and international guidelines. Unwholesome water contains one or more of these contaminants at levels that pose health risks.
What you get for EHT 225
Every topic above, split into sessions and dated against your exam.
Practice questions per session, with answers that explain themselves.
Offline reading — the whole course is a few hundred KB on your phone.
An AI tutor that answers questions using this course's own material.