The best compilation of water & wastewater analysis methods available anywhere! This reorganized reference source is written for many scientific fields, including chemistry, engineering, biology, health, the environment & geo-sciences. More than 340 hods are presented, each with step-by-step procedures for precise analysis of water & wastewater chemical constituents, sanitary quality, & physical & biological characteristics. Twenty-three new methods have been added & 26 methods have been revised to reflect the very latest technical advances. You'll find a revised method for turbidity, new information on UV-absorbing organic constituents cited in the Information Collection Rule (ICR), new procedures for laboratory occupational health & safety, & much more. Incorporates the methods published in the 18th Edition Supplement. CONTENTS INCLUDE : Physical Examination, Determination of Metals & Other Inorganic Nonmetallic Constituents, Determination of Organic Constituents, Examination of Water & Wastewater Radioactivity, Toxicity Test Methods for Aquatic Organisms, Microbiological Examination of Water, Biological Examination of Water. $180.00 Nonmembers, $140.00 APHA, AWWA & WEF members.