This paper explores an innovative teaching module to introduce inexperienced final year engineering students to water quality modelling as part of a core subject. The water quality teaching module consisted of an interactive computer-based instruction (CBl) package in assisting students to set up and runa commercially available water quality computer model (WQMAP) for a hypothetical raw sewage spill. The CBl package comprised of numerous HTML pages with links to on-screen recorded Lotus ScreenCam movie clips.rA formal class survey was undertaken which showed the teaching module was highly beneficial.