Should be fine.
Also, in regards to water source for the others, it will depend on the source. If your "tap" water comes directly from a well water source that's not further treated, that's different than getting your "tap" water from a treated source.
My water is treated, fluoridated, contains chlorine/chloride, etc and is thus treated to the requirements of standard bottled water.
So if EFraden's water is standard "city" water, treated etc by the city, then he's correct and he shouldn't have any issues with the water. If he's drilled down to the local aquifer and has well water... well, I'd be leaning towards the treatment side of things. Given that his location is listed as Rochester, New York, I'd assume standard treatments, chlorine/cloride etc. Thus, no need to distill, further treat or anything else.
The given shelf life of city tap water is 6 months. Of course, with EFraden's continuous setup, it's not stored for 6 months and circulates... you know, unless they decide not to drink sparkling water for that long.
6 months of city treated tapwater in a sterile container taken from the department of homeland security website. Also that if the water was taken from a well, or water source that was not treated with chlorine that it does need to be treated for this turnaround time. Commercially bottled water has a life of 1 year.