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Your water, clean water
The raw water reaching the drinking water treatment plant (DWTP) after catchment contains organic and inorganic matter and microorganisms (pathogens and nonpathogens). Consequently, the water normally has a colour and turbidity that prevents its direct consumption.
At the DWTP, a number of different processes (roughing filtration, flocculation and decantation, filtration and disinfection) turn it into water suitable for consumption, i.e. drinking water.