Grade 1, is organized into 21 chapters addressing core test content on certification exams. Chapters discuss regulations, operator math and chemistry, and specific treatment processes in detail. Other chapters cover water quality testing, electrical and monitoring systems, treatment plant safety, and monitoring and recording requirements. This textbook is now available in digital format for customers purchasing in bulk. Skip the shipping and the wait: we can provide your operations team or class with instant access to digital textbook rentals. Email email@example.com to take advantage of this new offer.