Treatment of water is basically using a variety of processes to improve the incoming water source to a outgoing water whose quality meets a certain standards or concentration. Very often the final water quality is dictated by the local water regulations with the aim to ensure that public health is not compromised.
Processes will thus vary. Few people realized that thus incoming water quality is a critical factor in determining which process to use to treat the water to the required quality. Cost is a factor as there is a need to optimism the operation cost and effectiveness of treatment. Source control of water quality remains the most effective, though the hardest to achieve.
The main issue is that changing treatment process is costly and time consuming, especially if the source water quality changes. There is no one size fit all treatment process. The technology now is thus still very much a multi barrier treatment process.
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