Q1 In a water treatment plant there is a suspected contamination in one of the product water supply pipes. You are provided with a sample of water from the pipe as well as a sample of slimy material from within the pipe which you think may be due to a microbial biofilm (a large aggregate of microbial cells within a slimy extracellular matrix). (a) How can you test the water and slime samples for the presence of contamination and determine whether there are different types of micro- organisms present? [5 marks]