This workshop will introduce you to the fundamentals of water quality modeling with a focus on P8 Urban Catchment Model. P8 is a water quality model for simulating pollutant generation and tratment in urban areas. This course will provide presentations, and hands-on exercises that will introduce you to the Windows version of the P8 model. The course will cover model assumptions, limitations, and application. You will learn how to review the results of water quality models such as P8.