After some further digging (including trying to run down an alleged ZeroWater scam) I'm inclined to agree that if ZeroWater truly does what it claims, it should be OK for use in a MK mister, depending on the starting level of TDS, and provided the system is... (How did Data phrase it...?) "operating within normal parameters."
There are still some things that concern me: the complete omission of calcium on the
performance results, the
TDS Comparison that says 99% of TDS removed = 000 (Shouldn't 000 equate to more like 99.99%?), all the reviews & tests I found used ZeroWater's own meter to test samples (instead of independent 3rd party meters), and claims that
ZeroWater has a fishy smell (If everything is removed, why is there something left to give it a fishy smell, and why doesn't that chemical register on the meter?)
Chalk all that up to my innate skepticism.
Actually, after looking up some of the
contaminants in the water around Flagstaff (been there— nice town), I'm glad
Beman is using
something to filter drinking water. There are at least 8 different water utilities in the Flagstaff area, so to get a better handle (If she so desires), go to
https://www.ewg.org/tapwater/ and input her zipcode, and then select her specific water provider (some of which may be well water districts).
Ultimately, time will tell. I hope it works out—those filters
are pricey. Let's see... @ $50 for 4 replacement filters= $12.50 ea., and should filter... (hard to estimate local pre-filtered TDS...) ~25 gal.(?) So roughly $.50 per gallon. Really depends on the TDS of the local water.