R. Scott Summers Garret P. Westerhoff Brian J. Leto Kirk O. Nowack Christopher J. Corwin. Laurel B. Passantino Technical Editor Zaid K. Chowdhury

About the Author

R. Scott Summers, Garret P. Westerhoff, Brian J. Leto, Kirk O. Nowack, Christopher J. Corwin, Laurel B. Passantino, and technical editor Zaid K. Chowdhury form a distinguished team of water industry experts with decades of combined experience in environmental engineering, water treatment, and utility management. Their collaborative work bridges theoretical knowledge with practical application, offering invaluable resources for professionals and operators seeking to enhance water quality and infrastructure reliability. Renowned for their precise, accessible explanations of complex systems, they have contributed significantly to training programs and certification preparation across North America. Through their joint authorship, they empower the next generation of water specialists to address pressing challenges in sustainable resource management with confidence and expertise.