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The third edition of this critical study guide has been updated to reflect new Need-to-Know Criteria and core competencies for collection system operators
water system supply security and public relations
which offer immediate feedback after each answer is chosen
To reinforce learning
Water System Operations (WSO) Distribution 3 & 4 (AWWA) WWC The third edition of thisWSO Water Distribution, Class 3 & 4, is organized into 13 chapters addressing core test content on certification exams. Chapters discuss regulations, operator math and chemistry, and specific distribution processes in detail. Other chapters cover water use and system design, water mains, hydrants and valves, water system supply security and public relations. Everything you need to know to pass your Class 3 or 4 exam is included in this book. To
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