The Coffs Harbour water supply originally consisted of a reservoir pump station with some lime addition. Chlorine was added further downstream and at key points in the distribution network.

As a regional growth centre, Coffs Harbour needed a new, much larger water filtration plant to meet the demands of a rapidly expanding population. Coffs Habour City Council secured land to build a new $60 million plant near the old one.

CNF played a major role in the alliance that was formed to build the new plant. CNF’s multi-discipline team was responsible for:

• The electrical and instrumentation design and installation of the new plant.
• The design co-ordination for all engineering disciplines.
• Construction support.
• Taking on much of the mechanical contractor’s role when it became evident that they could not keep up with the pace of design and construction.
• The project engineering, final design and expediting the 10 chemical storage and distribution systems including chlorine gas, caustic, CO2, alum, PAC, hydrofluorosilicic acid, lime, permanganate, coagulant and filter aid polymer.