I used to sail a boat. It had large stainless steel water tanks which we refilled every so often from shore facility taps and rarely emptied them completely. Never had a problem with bad water and certainly didn't boil it before drinking. Only treatment was a sterilising tablet once in a while.this maybe a daft question.
I fill a bottle of water from the tap and put it in the fridge on the 1st of the month... what's the use-by date?
I would too but it seems (just looked it up) that it is widely used to kill off bugs. I guess it has to be used fairly soon and not left long enough for something else to grow or perhaps it gets too hot to allow green stuff to growI thought that would encourage algae growth?