WEF's peer-reviewed standards and other publications are intended to provide information through a review of technical practices and detailed procedures that research and experience have shown to be functional and practical. These peer-review standards and other publications are essential to helping water quality professionals enhance their skills, further their technical knowledge, and advance their careers in the circular water economy. WEF Study Guides are designed for today's professional operators. Our guides cover a wide range of facility operations including, biosolids, collection syste