This book presents an innovative integration of Water Quality Engineering with Systems Science and Information Science, offering a comprehensive theoretical framework alongside practical guidance to address the increasingly complex challenges of water quality management. The content is structured into three main parts: (1) Information and Signals in Water Quality Systems; (2) Linear Water Quality Systems; and (3) Nonlinear Water Quality Systems.

Adopting a novel perspective rooted in information space, the book provides a clear and accessible introduction to the fundamental theories and principles of system control in water quality systems. It equips readers with essential methodologies for data acquisition, signal analysis, and the development of precise and intelligent control strategies.

This work is intended as both a textbook and a reference for advanced undergraduate and graduate students in Environmental Engineering and Systems Engineering. It also serves as a valuable resource for researchers, professionals, and engineers working in Information Science and related technological fields.