oh crap. i did talk about all that stuff, amaziongly i memorised the 9 steps...i can still hear them ringing in my head! arrggh! screening, aeration, flocculation, sedimentation, filtration, chlorination, pH adjustment, flouridation and lastly storage reservoir......KUDOS TO YOU MAQUARIE GUIDE! it saved my life for that question, also talking about the management techniques, the problems faced by giardia and cryptosporidium and balancing between cost and quality. that qas the best question in the paper i think.