Hi Ian, Can you please explain this comment?  For example, if water is properly stored once properly treated what re-contamination could there possibly be?

Because in the real world there is pipework that wasn't installed today and that has a biofilm and storage reservoirs  have to be vented thereby allowing air to come in and out of the tank and this can carry contaminants even if there is insect screening.

Published March 28, 2019 12:49 by Steve Oxtoby, Process Engineer

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